Mine was about 15 yrs ago in Los Gatos, CA. I was riding to work and some old a#$% in a pickup truck yelled something at me as he drove past. So I thought, I'll show him - I speed up and catch up to him at the next light. I yell over to him, "What did you say to me?!"

He replies rather calmly - "I said, you have a nice ass."

Not what I was expecting, all I could say was "Thanks?"