I was standing in a parking space at a corner in this ritzy little shopping neighborhood speaking on the phone with my grandmother and some hoity toity guy parked behind me lay on his horn. I ignored thinking it was something traffic related when the guy pulls out beside me, honks again, flips me off and says "How about you move you ****in' prick?" to which both he and his girlfriend break out in raucous laughter.
Until I caught up with him 2 blocks later. At which point, he rolled up his windows and tried to act as if he'd never seen me.