Peter: Don't worry, I've got an idea-an idea so smart my head would explode if I even began to know what I was talking about.
Peter (as a child): Why did all the dinosaurs die out?
Man at Museum: Because you touch yourself at night.
Peter (after Lois tells him he's childish): "If I'm a child that means you're a pedophile, and I'll be damned if i'm going stand here and take this from a pervert."
Meg (about Peter being retarded): I can never go to school again!
Stewie: Oh, yes, Meg, yes-yes yes, everything was going swimmingly for you until this. Yes, yes, THIS is the thing that will ruin your reputation, not your years of grotesque appearance, or your awkward social graces, or that Felix Ungerish way you clear your sinuses, no no no, it's THIS. Do you hear yourself talk? I might kill you tonight.
Best show evar