In the winter when I ride home after Dark and I'm all lit up sometimes people will pull up alongside me and say something like, "now that's the way to do it".

My favorite encounter with a motorist was a few years ago when a car with for teenagers drove next to me with their windows down and waved or said something and I rang my bell. So the driver beeped the horn lightly, and I rang my bell. So he beeped again, and I rang my bell again. So then he honked " shave and a haircut" and I beeped out "two bits" with my AirZound air horn. They started laughing and cheering and I think we did it three or four more times after that before they had to turn off.