One of the best car driving memories I have is causing a row of Tour de France style cyclists to go down like a house of cards. Approaching the roundabout they were negotiating using a very racy line on a very wet road, I act surprised and only stop right behind the white line (where you should stop), this caused just enough of a distraction for the leader to weave a bit, the leader caused the second guy to brake and slide off, and this caused the following 5 or 6 guys to do the same. All this and I'm stopped looking at them laughing, without having entered the roundabout.