if you had to slam on your brakes while being behind a cop you were probably following too closely. surprised he didn't ticket you for that. sounds to me like you could've avoided this whole situation by saying "nothing, hit the horn on accident, have a nice day!" and kept driving. Sounds to me like you're the fucking idiot for picking the wrong battle. Actually think you can yell at a cop an tell him he can't drive without any repercussions?