Once I was putting away my bike after one of those big day rides where you pay money to a charity. I start walking to the HQ building and I hear, "there he is" as a woman was pointing me out to a policeman. Huh? Turns out I had passed her a few miles from the end, going completely into the other traffic lane, but didn't warn her. Cop waved me away and was trying to explain to the woman that I'd done nothing wrong; She of course (being a total noob to riding - probably did the 6 mile route) was incensed by not being warned even though I'd probably left her 10 feet of room.