Exactly... most cops I'm friends with get pretty irritated by people talking back and being rude, so they just sit back and remember every detail, the person's car, the person's name, etc. and when they mess up next time they don't have to let them off with a warning. Anything that can get a ticket the cop will remember how rude and obnoxious they were and just write it, usually they are pretty nice if the person is respectful and decent.