Smile and wave. Kill them with kindness. Works every time for me. Don't let this isolated incident keep you from riding. There are always going to be uninformed and ignorant people out there trying to bring you down. This weekend I had a conversation with a rather large person who thought I was crazy to be riding on the roads. She said I would be safer staying in my cul-de-sac and riding. I told her I was riding to and from work so I didn't think that was going to work very well...