User blog comment:Kaijusaurus-Rex/List of Season 1 Callbacks in Season 5 So Far/@comment-30307603-20170227160437

Not sure if this one is stretching it or not, but in "The Copycats", the Watterson brothers walk by an exotic food section and start making snarky comments about the selection. The musical cue that plays during this segment is the same on from "The Quest" when the some of Gumball's classmates are tossing Anais's Daisy the Donkey doll around.