The episode opens with Richard struggling to open a box of Daisy Flakes, when he gives up and throws the box away, claiming it to be "useless." Gumball and Darwin trudge into the dining room, complaining that they do not feel like going to school today. Richard tells them that they must go to school anyways because they are still kids and they have no control over their lives. The doorbell rings, and Richard answers it, comes back with a box, and continues telling them that they should enjoy being kids before they are adults. He starts crying over this and leaves with he thinks is his supplements, while Gumball and Darwin dreamily describe what they would do if they were men. Anais walks in confused on what had happened, and they all start eating their 'cereal.'
Later that morning, Gumball and Darwin are riding the bus to school when they happen to see a shooting star standing near a bus stop. They wish upon the star to make them into men, which disappointingly does not turn them into men, so they throw a can at him.
At school, Miss Simian is teaching her students about the effects of puberty. Gumball and Darwin are passing notes. Gumball's depicts him calling his receptionist at work and Darwin's depicts him voting. Miss Simian spots the two passing the notes and claims that they are at least on topic. The lesson carries on, and Miss Simian begins the topic of acne, during which a large pimple sprouts on Darwin's head. Gumball attempts to hide it by putting a small bowling hat on it, but more appear on Darwin. Darwin asks why Gumball does not have any which Gumball replies, "Just lucky, I guess," but when he turns his head around, it can be seen that he also has a lot of acne. Both of them start to scream and freak out.
In a panic, Gumball and Darwin run into the girls' bathroom on accident. They manage to pop all the pimples, but Darwin starts growing facial hair soon after. After Gumball attempts to remove it (using bubblegum instead of wax), they both regrow the hair and a unibrow. They scream at each other in horror, to which Penny reminds them that they are in the girls' bathroom. Gumball and Darwin remove all their hair with gum and return to class.
During their gym class, Miss Simian announces that they are going to play dodgeball, which Gumball cannot stand. Tina comes over to Gumball and remarks that he is going to get pummeled, which he does, unfortunately. After almost being hit with a bowling ball, Gumball decides that he has had enough, and his arms suddenly begin to grow to massive proportions, his body becomes ripped, and his mustache grows back. He throws a dodgeball with terrifying strength, which hits Tina and sends her crashing through the wall. Gumball looks back at Darwin, who had just gone through exactly the same changes. As they both scream in terror, their voices deepen drastically.
Gumball and Darwin lock themselves in the bathroom again (though this time they are in the boys' bathroom), claiming that they have been turned into monsters. Miss Simian is able to coax Gumball and Darwin out of the bathroom, explaining that what they are going through is just a natural part of life. Miss Simian tries ordering them back to class, but Gumball realizes that they do not need to listen to her anymore because they are men.
Gumball and Darwin test drive a car, pay more for the movies, and even consider having their own kids. Although they soon realize that they cannot since they do not have jobs. They go to an office, where they are interviewed by the Cupcake Woman. Since neither of them have any special talents, she refuses to consider them for a job, but they both persist, which irritates her so much that she gives up her job to them.
Gumball and Darwin are not sure what they are supposed to be doing, but they do know that they can fire and hire people. They both go around the office, firing and hiring random people at their own will, even firing each other by accident. Gumball and Darwin stay at their new home, a run down apartment, and begin to have regrets about them wanting to become men.
A sudden knock at the door wakes them up, as a large, looming figure stands at the door. Gumball and Darwin believe it is the landlord, but surprisingly, the looming figure is Anais, sporting a mustache and a large stature. She explains to Gumball and Darwin that the entire thing was a large misunderstanding and urges them both to come home with her.
At home, Richard worries about his physique while Nicole attempts to comfort him. The kids come in, freaking their parents out before Anais explains the situation to her brothers and their parents: at breakfast, Richard accidentally switched their cereal with a box of protein supplements (called "Male Power 2000"), which the kids unknowingly ate in lieu of the cereal. When Nicole questions Richard on why he bought those supplements in the first place, he explains that whenever he checks his e-mails, the advertisements intimidate him into buying whatever they are selling.
Nicole and the kids assure Richard that they do not care what he looks like and that they love him for who he is, which makes him feel better. After the family shares a group hug (during which the kids nearly crush their parents with their newfound strength), Gumball expresses worry about how long he, Darwin and Anais are going to be the way they are right now. Nicole reads the box of Male Power 2000 and assures that, according to the box, the effects wear off after a week. The episode ends with Richard and Nicole having fun with their still-gigantic kids at the park, much to the confusion of the other citizens at the playground.
According to Gumball, Nicole waxes often, which is strange because, like Gumball, she is covered in fur.
Oddly enough, Richard's supplements affected Anais the most, despite her being a female child. This mirrors the effects of testosterone supplements on females, where they develop male-like characteristics.
In the apartment which Gumball and Darwin shared, there is a pair of UK plug sockets on the wall above the couch.
This is the second time that a family laptop is destroyed. The first time was in "The Responsible." It happens again in "The Phone."
This is the second time Darwin's butt is exposed, or the third time if one counts the trailer.
This is the second time Darwin grows hair; the first time was in "The Refund."
In "The Dress," Darwin is shown to have decent artistic skills but in this episode, his drawings mimic that of a four year old. This would be mentioned again in "The Procrastinators."
This episode is an obvious parody of the 1988 film Big, where young Joshua Baskin wishes to be big, and his wish is granted. But after a few weeks, Josh discovers the joy and wonder of being a kid.
The song "Because We're Men" is a parody of the song "Now That We're Men" from the 2004 Nickelodeon movie The SpongeBob SquarePants Movie.
Gumball and Darwin are seen as completely hairless at one point. This is unusual in Darwin's case because he does not have fur. Moments later, their skin returns to normal.
Gumball's whiskers are not visible while he is getting pelted by dodgeballs.
When Gumball and Darwin are being pelted by dodgeballs, the second time Darwin screams "My ankle!" his mouth does not move.
When the kids are in class, Leslie's pen is in mid-air.
Before Gumball and Darwin panic and hide in the girl's bathroom, Penny can be seen in the classroom. However, when Gumball and Darwin are in the bathroom, she is already at the bathroom stall with no given explanation on how she got there before they did.
Richard: Ugh! So much for easy opening! It looks so simple on TV!
[Gumball and Darwin walk in, looking unhappy.]
Gumball: Oh, man, I really don't want to go to school today.
Darwin: Me neither.
Gumball: Let's not go!
Darwin: You can do that?
Gumball: Sure! Hey, Dad?
Richard: [Still trying to open the box] Yes?
Gumball: [Takes the box from Richard, opens it, and returns it] We really don't want to go to school today.
Richard: Why? Are you sick?
Gumball: Nah. We're not just up for it.
Darwin: Yeah! School is boring!
Richard: But you have to go to school. You're kids! It's what you do!
Gumball and Darwin: Aw!
Richard: Ooh! Mailman! Whoo-hoo!
[Richard runs off]
Gumball: I wish we were grown-ups, like Dad. Then we'd never have to go to school and nobody would tell us what to do. We could drive trucks, stay up all night, vote.
Gumball and Darwin: [Gasp] Vote...
[Richard comes back with a supplement box.]
Richard: Oh! Finally!
Gumball: What's that?
Richard: [Gasps, then starts to sweat and look anxious while hiding the box behind him.] Why? According to the Fifth Amendment, I don't have to answer that without my lawyer present!
Gumball: Right. Anyway, about school...
Richard: [Places the supplement box on the table.] Oh, yeah. You're kids, so you do what mom tells me to tell you to do.
Gumball: [sighs] Being a kid is wretched-lame.
Richard: You should be happy to be young. Before you know it, you'll be overweight, unattractive, balding, middle-aged.
[Richard starts sobbing.]
Richard: [Mistakenly takes the cereal box.] Take over breakfast! I don't want you to see me like this!
[Richard runs off crying, then shortly Anais walks in.]
Anais: What's his problem?
Gumball: Eh. You never know with that guy. Come on. Let's have breakfast.
[Gumball pours in the supplements from the box to the bowl.]
The Shooting Star
Gumball: Man, what a pile of beans.
Darwin: [Gasps] Dude, watch your language! You'll get us in trouble!
Gumball: Well, I'm sorry, Darwin, but it is. It's a big, steaming pile of beans.
[Gumball and Darwin gasps as they a hear the sound of the "shooting star".]
Darwin: Gumball, look! A shooting star!
Gumball: This is our chance. Make a wish!
[Gumball and Darwin close their eyes.]
Gumball: I wish I was a grown-up.
Darwin: Me too!
[Gumball and Darwin wait for a short while, then open their eyes to see each other still not grown-ups yet.]
Gumball: That didn't work at all. Ugh!
[Gumball throws a can at the Shooting Star.]
Shooting Star: Ow!
Shooting Star: Oh, darn kids! What do you think you're doing?!
Transformations of the Human Body
[Scene changes to the class room where Miss Simian is teaching about the human body.]
Lucy Simian: Today's lesson will be about the transformations of the human body.
[Gumball and Darwin are uninterested, Gumball continues with his doodle.]
Lucy Simian: [Pulls out a chart] As you get older, hormones begin to change your appearance.
Gumball: [Throws a piece of paper at Darwin] Here. [Darwin unfolds the paper and sees a picture of Gumball as an adult.] It's me as an adult talking to my secretary over the intercom.
Darwin: [Throws a piece of paper at Gumball and Gumball unfolds it and sees a picture of Darwin as an adult.] It's me voting!
Lucy Simian: Passing notes, are we?
Gumball: No, Miss Simian.
Lucy Simian: [Grabs both of the papers.] Well, then, what's this?
Gumball: Uh, that's us as adults?
Lucy Simian: I guess you're on topic, then. [Turns around and faces the board again.] Anyway, pimples --
Lucy Simian: [Turns around to face the class.] Silence! Actually, it's pretty gross. You may continue.
Lucy Simian: [Turns around and faces the board again.] Pimples, or acne, [Camera changes to Darwin as a pimple grows on his face.] can pop up at any time...
Gumball: [Points at Darwin's pimple.] Dude, what's that on your face?
Darwin: What? What?!
Gumball: [Points closer at Darwin's pimple.] That.
[Camera changes to the inside of Darwin's pimple as Gumball looks at it.]
Gumball: It looks like a greasy, yellow egg. No, no, actually, it's more like a small volcano with a sweaty golf ball.
[Camera changes back to Gumball and Darwin.]
Darwin: Do something! Do something!
Gumball: Okay, okay. Hold on. Let me just, um... [Grabs a small hat and use it to cover Darwin's pimple.]
[Darwin breathes a sigh of relief, but more pimples start to grow on his head.]
Gumball: I think we're gonna need more little hats.
Gumball: Relax, dude!
Darwin: That's easy for you to say! Why don't you have any?
Gumball: Just lucky, I guess.
[Gumball turns his head around and the back of his head is filled with pimples too.]
Darwin: [Points at Gumball's pimples.] Aaah!
[Both of them run out the classroom screaming and run into the girls' toilet; Scene changes to the toilet door where Gumball and Darwin are still screaming in pain.]
Gumball: [Off scene] I think that's all of them.
[Scene changes to the inside of the girl's toilet where Gumball and Darwin are covered with pink papers.]
Gumball: What's happening to us?
Darwin: I think we've got the plague.
Gumball: Do you have any other symptoms?
Darwin: My top lip feels a little silky.
[Scene changes to Miss Simian who is still teaching the human body to the class.]
Lucy Simian: Next comes the appearance of hair on the body and face.
[Scene changes to back to Gumball and Darwin where Darwin starts growing a mustache.]
Gumball: [Laughs] Dude, you look like an undercover cop.
Darwin: Stop laughing! Do something!
Gumball: Okay. [Takes out a piece of bubble gum and starts chewing it.] I see Mom do this all the time. And Dad, on one occasion.
[Gumball takes the gum out of his mouth and puts it along Darwin's mustache, then pulls the gum and Darwin's mustache off.]
Darwin: [Sighs] That feels so much bet-- Aaaaaah!
[Darwin starts growing a bigger mustache and bigger eyebrows.]
Darwin: [Points at Gumball] Aah!
[Both of them have a big mustache and eyebrows with hair on their armpits.]
Gumball: Don't worry, dude.
Darwin: I'm not worried about me! I'm worried about you! You look like a baby werewolf!
Gumball: No! Not me! It was better when it was just you!
Penny: [In a cubicle] Uh, guys, I don't mean to interrupt, but this is the girls' toilet.
Gumball: Uh, yeah, sorry! [Hands some gum to Darwin.] We've got to sort this out. Start chewing.
Into Grown Men
[Scene changes to the School Gym where the students are; Gumball and Darwin are completely bald.]
Lucy Simian: Okay, settle down. Everyone, get into your team for dodgeball.
Gumball: [Facepalms] Oh, no. Not dodgeball.
[Tina walks up to Gumball and Darwin.]
Tina: You're going down. [Tries to punch her fists together, but they are too short.] You get the idea.
[Everyone gets to their teams and a siren goes off.]
Gumball: Please -- not above the should--
[Gumball and Darwin get hit by dodge balls and both of them scream in pain.]
Gumball: The ear!
[Gumball and Darwin still get hit by dodge balls and both of them still scream in pain.]
Darwin: My ankle!
[Gumball jumps onto Darwin as a bowling ball almost hits Gumball.]
Gumball: Aah! A bowling ball?!
[Tina laughs maniacally while Gumball gets angry and starts breathing heavily; Tina uses her tail to launch a dodge ball at Gumball.]
Gumball: [Gumball catches the dodge ball and his voice turns into a deep voice.] Enough!
[Leslie and Alan gasp as Gumball transforms into a grown man and throws the dodge ball back at Tina, causing her to fly out of the gym. Everyone sees what happened to Tina. Gumball then steps forward while everyone looks at Gumball flexing his chest, shoulder and butt.]
[Gumball and Darwin look at each other as grown men.]
Gumball and Darwin: [Point at each other] Aaaaaaaaah! [Their voices break, then turn deeper.] Aaaaah, Aaaaaaaaaaaaaaah!
[Scene changes to the boys' toilet where Miss Simian is waiting outside and Gumball and Darwin are inside the toilet.]
Darwin: [Inside the restroom] This is horrible! We're monsters!
Lucy Simian: No, you're not. It's just a part of life.
Gumball: [Opens the door] Are you saying we're grown-ups now?
Lucy Simian: Apparently so.
Gumball: Did you hear that? That shooting star worked.
Lucy Simian: Now, get back to class!
Gumball : [Looks down] All right, Miss Simian. [Miss Simian nods her head.] Wait a minute! We don't have to listen to you anymore. Because [Scene changes to a concrete door.] we're men!
Because We're Men
(Song: Because We're Men)
♫ We're gonna test drive a car ♫
♫ Say we need a little time to think about it ♫
♫ Because we're men ♫
♫ We're gonna pay more for the movies, ♫
♫ Chop down trees, ♫
♫ and eat a lot of meat ♫
♫ Because we're men ♫
♫ And we can have our own kids, ♫
♫ but we're gonna wait until we meet the right person because it's an important decision ♫
♫ But in the mean time, we can barbecue ♫
♫ buy power tools ♫
♫ get tattoos ♫
♫ buy our own sho-o-o-o-es!♫
Gumball: Oh, wait. No, we can't. We don't have any money.
[Gumball and Darwin sigh, and then look at each other.]
Gumball and Darwin: Let's get jobs!
Getting a Job
[Scene changes to an office room where Gumball and Darwin get interviewed for a job.]
Cupcake Woman: Well, as far as I can see from your...
[Cupcake Woman shows a picture of Darwin voting.]
Cupcake Woman: résumé, you have absolutely no qualifications whatsoever. Do either of you have any applicable skills?
Gumball: Well, I can do this.
[Gumball lift up his shirt and starts rolling his stomach, while Cupcake Woman shows displeasure.]
Cupcake Woman: Look, for the third time, Mr. Watterson, rolling your stomach is not a valuable skill in the work environment.
Gumball: Oh, I-I'm sorry. Point taken.
Cupcake Woman: Good. Okay, so, looking at your track re--
[Gumball starts rolling his stomach again.]
Gumball: Huh? Oh, oh, I see. Sorry.
Cupcake Woman: Look, right now, I need you to give me a valid reason why I should even consider giving either of you a job.
Darwin: Well, I can touch my nose with my tongue.
Gumball: That's not a skill. This is.
[Gumball starts rolling his stomach once again.]
Cupcake Woman: You guys want a job? Well, you can have mine! I quit!
[Cupcake Woman throws their name tags at them.]
Cupcake Woman: Good luck!
Gumball and Darwin: Yea!
Darwin: What do people with jobs do?
Gumball: I don't know. Hiring and firing?
Darwin: Cool! Well, you're hired.
Gumball: So are you!
Darwin: What now?
Gumball: Guess we should do some firing?
[Scene changes to the office hall when Gumball and Darwin starts firing employees.]
Gumball and Darwin: [Point at Newspaper Employee] You're fired!
Gumball and Darwin: [Point at Charlie] You're fired!
Gumball and Darwin: [Point at Office Dog] You're fired!
Gumball and Darwin: [Point at Contract Paper] You're fired!
Darwin: [Points at Gumball] And you're fired!
Gumball: Hey, why are you firing me for?
Darwin: It's what I do.
Gumball: Well, you're fired!
Darwin: You can't fire me! I just fired you!
Gumball: All right, quickly, hire me again.
Darwin: Okay. You're hired.
Gumball and Darwin: You're fired!
I Wish We Were Kids Again
[Scene changes to an old apartment where Gumball and Darwin live. Scene changes again to the living room where Gumball and Darwin are watching TV.]
Darwin: Oh, I can't believe we lost our jobs.
Gumball: So, this is being an adult, huh?
Darwin: No money.
Gumball: No job.
Darwin: Crumbly apartment.
Gumball and Darwin: Rent overdue!
Gumball: And this [Pulls out a dirty candy cane] is our last piece of food.
Darwin: I think we should share it.
Gumball: [Munching on dirty candy cane] Sorry. What was that?
Darwin: I can't believe you ate our last piece of candy!
Gumball: Well, I can't believe I'm stuck here with you!
Darwin: I can't believe we're both yelling!
Gumball: I know! We're trying to hide from the landlord!
Darwin: Let's be quiet, then!
[Gumball and Darwin are grieving upon themselves.]
Gumball: I wish we were kids again.
Darwin: Me too.
Gumball: [Sobbing] I'll be in my room.
Darwin: [Sobbing] Me too.
[Darwin started crying to his bed that he is sharing with Gumball. Darwin used newspapers to cover himself like a blanket. Loud steps begin to be heard outside Gumball and Darwin's apartment.]
Gumball and Darwin: [Gasp]
[Loud steps continue to be heard.]
Gumball and Darwin: [Gasp]
Darwin: Someone's coming!
Gumball: Oh, no! It's the landlord!
[After the final loud step, a pink man starts banging on Gumball and Darwin's door.]
Darwin: What are we gonna do?
Gumball: I don't know!
[The door banging becomes louder and faster and both Gumball and Darwin are lying on their bed terrified. The door than budges off to reveal a large man.]
Darwin: Please don't hurt us!
Gumball: Take anything you want!
Anais: Guys, [Revealing her masculine self] it's me -- your sister.
[Both Gumball and Darwin are shocked.]
Gumball: Dude, you look like a Mexican wrestler.
Anais: I'm not a man, and neither are you. I think I know what happened. Follow me. [Starts stepping out of the apartment.]
Being kids again
[Scene changes to the Wattersons' house where Richard is trying to look muscular by holding his chest up.]
Richard: Come on. Stay up. Stay up! [Chest finally stays up.] Yes! [Chest flops down again.] No! Now, come on! Flex! Flex, flex!
Nicole: [Pops out] Richard?
Richard: [Gasps, then covers himself with his shirt.]
Nicole: What are you doing?
Richard: I'm getting old. It's like you always say -- "we grow up so fat."
Nicole: "Fast," Richard, and I was talking about the children.
Richard: Oh, don't talk to me about those rosy-cheeked, baby-faced... [Points at something off screen] hairy mutants!
[Masculine Gumball, Darwin and Anais show up in the Wattersons' living room.]
Gumball, Darwin and Anais: Hi.
Nicole: [Gasps] What's happened to my babies?
Anais: [Clasp on Nicole's hand so tightly that Nicole is in pain] It's okay, Mom. I think it was these that turned us into men. [Carrying Richard's supplement box.]
Richard: Oh. You've found my supplements. [Looks inside the box] But they're empty.
Nicole: Can someone please tell me what's going on?
Anais: Sure. [Flashes back to that morning when Richard misplaced his supplement box.] At breakfast, Dad left with the cereal box, so we ate his supplements by mistake.
Richard: Oh, I think I know what happened.
Anais: Yeah, I just told you.
Nicole: Richard, why on earth were you buying those supplements?
Richard: I couldn't help myself. It's the internet's fault. [Shows his laptop] Every time I opened my e-mails, this is what I get.
Advertisement: Are you too fat?
Advertisement: Are you too bald?
Advertisement: Are you really the man she deserves?
Richard: No! [He throws the laptop out of the window along with the other laptops he threw before.]
Nicole: So, that's where all the laptops went.
Richard: It was a moment of weakness, [Sobbing] and I crumbled, Nicole! I crumbled! [Crying]
Nicole: Oh, honey, you didn't need those pills. I love you just the way you are.
Gumball, Darwin and Anais: So do we, Dad.
Richard: [Sniff] Really? Oh, [Richard and Nicole opened their arms to welcome Gumball, Darwin and Anais a hug] come here, my little --
[Gumball, Darwin and Anais hug Richard and Nicole very hard, crushing them in the process.]
Richard: [Crushed] ...body builders.
Gumball: So, are we gonna be like this forever?
Nicole: [Checks the back of the supplement box.] Oh, it says on the box that the effect wears off after a week.
Richard: Hmm. At least that pyramid scheme will be more reliable.
Nicole: Anyway, now this is all cleared up, let's all get out the house and have some fun.
Gumball, Darwin, Anais and Richard: [cheering]
[Scene changed to the outdoor playground, where Gumball and Darwin are having fun riding the spring riders while everyone stared at them in shock. Anais is playing the swing while Richard is having a hard time pushing her up.]
Anais: Higher! Higher! [Laughs]
Nicole: [Talking to a family while the mother is covering her child's eyes] They grow up so fast.
Richard: Oh, precious mo--
[Anais falls back down on the swing and hits Richard unconscious, laughing at the same time]