Meeting girlfriend's parents for the first time again. Any tips?

alrighty...aviod sarcasm...be funny...dont try to sound all smart and intellectual just be cool calm and collected and confident....be funny but watch what you say. dont make ual jokes or jokes that make awkward silences. act like you like ur girlfriend but dont seem all lovey dovey and putting ur amrs around her and stuff. NO dont do that. act like ur taking things super slow and act like is the farthest thing from ur mind. make them think that you are different than other boys