I rented a slip in a marina for a week and the first day,about 20 people, began the clapping. The following day on my way out of the marina, an old guy (who was one of the 30 people), put an RC cigarette style boat in the channel and was racing around me. It gave me the perfect chance. I proceeded to put my boat in neutral and "rev the SH*T out of it. Half of the clappers got a kick out of it (and actually turned out to be great people) and the other half.......well.....didn't talk to me too much the rest of the week. I think a lot of the people just "follow suit" when they see someone else doing stupid sh%t like clapping or plugging their ears.