Kelso: Hey, Angie, when Tom Jones gets here, you're not gonna throw your underpants at him, are you?
Angie: Michael, you know I don't wear underwear.
Hyde: Come on, man, you're my sister.
Kelso: I just told her to say that to gross you out. Burn!
Hyde: Yeah, you got me.
Kelso: Besides, I happen to know that she does wear underwear. Sometimes she lets me take them off for her. Boomerang burn!