Kelso: Hey, you hitting on my girlfriend?
Jackie: Michael, he's not-
Guy: Hey, man. You wanna go? Come on. Yeah, let's go, cowboy!
[As Kelso starts to take off his trench coat and square up to the guy, Eric, Hyde and Fez drag him away]
Kelso: You are so lucky I'm naked, pal.
Eric: Shut up.