Quotes: Not Allowed to Grow Up
Brian: Look, Stewie, don't you think at some point you're gonna have to let Rupert go? I mean, you are getting a little old to have a teddy bear.
Stewie: Brian, I'm one.
Flapjack: Cool! How did you do that?
Captain K'Nuckles: Eh, I'll tell you when you're older.
When's that going to happen?
"I wish I would grow up; it feels like I've been 10 for years." note
Lisa: To prolong the run of the series, I was secretly given anti-growth hormones.
That's ridiculous! How could I even get all five necessary drops into her cereal? (beat) What?
"Why aren't I aging? Good God, am I a monster?"
— Bart Simpson
(while writing on the chalkboard), Robot Chicken
, "Major League of Extraordinary Gentlemen"