Diane: Do you know the diffrence between you and a fat brained ass?
Diane: The fat brained ass would.
Sam: Speaking of fat brained asses, you're about to get dumped on yours.
(Diane slaps Sam, he slaps her back)
Diane: How dare you slap me?
(Diane slaps Sam again, he slaps her back again)
Diane: Don't you ever hit me again!
Sam: Like hell.
(They carry on slapping each other)