Eric: God, I can actually see this thing growing. It's like... Jiffy Pop.
Kelso: My friend once, he had this really big zit. And he tried to pop it and all the pus went into his brain, and it killed him.
Donna: Really, Kelso? What friend?
Kelso: You didn't know him.
Donna: That's 'cause he doesn't exist.
Kelso: 'Cause he's dead now!