I've always wondered about this exchange of dialogue in "Pulp Fiction":
Butch: You lookin' at something, friend?
Vincent: You ain't my friend, Palooka.
Butch: What's that?
Vincent: I think you heard me just fine, Punchy.
What is Vincent's problem with Butch?
Is this just foreshadowing -- in other words, a set-up for the scene later in which Butch kills Vincent? Is it demonstration of Vincent's lousy personality? Or is there some plot element I'm missing?
side note: While searching Google, I came across the intriguing idea that after the dialogue above, Butch keyed Vincent's car (something Vincent complains about in another part of the movie)