The family is eating the pizza from previous episode.
Comic Transcripts
Narrator: Eating Pizza from episode 21.
Adam: Can I have another slice please?
Casey: Sure!
Adam: More pizza please.
Adam: More pizza.
Adam: More pizz
Casey: Wow, you’re bigger on the inside, where are you putting all that pizza.
Adam: I don’t know, here I guess.
Casey: ha ha ha!, is that so, let me see.
Casey: I knew it!.