Quotes / Forbidden Chekhov's Gun

Egon: Don't cross the streams.
Peter: Why?
Egon: It would be bad.
Peter: I'm fuzzy on the whole good/bad thing. What do you mean, 'bad?'
Egon: Try to imagine all life as you know it stopping instantaneously and every molecule in your body exploding at the speed of light.
Ray: Total protonic reversal.
Peter: Right. That's bad. Okay. All right. Important safety tip. Thanks, Egon.

Reed: Johnny, supernova!
Johnny: Thought we agreed that was bad?

Stan: She doesn't stay dead!!! We can't beat her!
Kyle: Dude, we're fucked! There's no way!
Cartman: There is ONE WAY. We're going to have to break the Gentleman's Code.
Kyle: What?! Cartman, you can't possibly mean—
Cartman: What other choice do we have, KYLE?! KING DOUCHEBAG! You remember long ago, I made you swear an oath to never fart on anyone's balls. I am now asking you— to break that oath.
Stan: He's right. It's our only chance.
Cartman: Fart on Princess Kenny's balls, King Douchebag. DO IT!