When Kelso tries to take Red's car, he uses all kinds of words and phrases he shouldn't even know! suddenly he knows words like 'suffice'?!
Kelso's done this before; he wants to try to 'impress' Red by being 'intelligent'. He likely copied it from friends/TV/whatever
Red: Shoes are an innapropriate gift to give to another man.
Kitty: What about when you joined the service? Another man issued your boots.
Red: So? He gave me a gun so I let it go.
Kitty: Why can't you just accept the gift because Bob is your friend?
Red: Kitty you don't understand. We don't give each other presents. We just ignore each other.
(Bob has just given Red a pair of shoes)
Kitty: Oh he gave you shoes. What do you say Red?
Red (to Bob): What the heck is wrong with you?
Kitty: We say thank you very much.
Red: Don't you think it's a little odd for a man to be giving another man a pair of shoes?
Bob: I thought they would go nice with your tan pants.
Red: Quit thinking about my pants. My legs and what covers them is my business.
Hyde: It looks like something for a girl...
Fez: I like it.
Hyde: ...or Fez!
Hyde: (about his room) Jackie, just put it all back, okay? Make it ugly and dirty like I like it.
Jackie: Well, excuse me for spending all morning putting up twinkle lights that are breath-taking, pillows as soft as marshmallows, and scented candles that make you feel like you're running through a field like Laura freakin' Ingalls!
Fez: So I told Hyde he could watch while Jackie and I do it, and he hit my ass with a twinkle light!!!
Jackie: When I look at myself in the mirror, I'm happy.
Fez: When I look at you, I'm happy too. But when you talk, meh..
Jackie: ....and scented candles that make you feel like you're running through a field like Laura freakin' Ingalls!
Jackie is referring to the opening credits sequence of Little House on the Prairie, a drama which ran from 1974 to 1984, in which Laura Ingalls and her sisters run through a field of tall grass and flowers.