Cartman: Hey, Jimmy. You're not going to believe this, but... I ran away from home. I just... really need the support from my best friend right now.
Jimmy: Who's your best friend?
Cartman: You are, Jimmy! We've always been best friends! We know everything about each other!
Jimmy: What's my last name?
(Cartman realises he doesn't know, so he walks off in a huff)
Cartman: Goddamn it!