Originally Posted by mattface
When passing a slower cyclist (especially of the opposite sex) the appropriate thing to say is "nice ass". This nice compliment tells them that you were enjoying the view, and you don't come off as complaining about their speed.
To be honest, I couldn't tell she was a she until I turned and saw her face. She had pretty thick winter gear on (which was strange since it was 12°C/54°F and a warm sun then).