Probably chew you out a little bit. What ever you do though do not admit you were speeding. If the cop wants to be a prick there basically is nothing he can do other than bitch at you. An untrained civilian’s word means absolutely nothing in court, unless you admit you were speeding to the cop.
The whole “he was driving like an asshole and I just wanted to get away from him” thing is not going to be an excuse. You don’t think the cop has heard that one before?