Originally Posted by sleepy

I wave or nod when I can. Depends on the vibe.

One time I was in Lycra riding my steelie, and this kitted out Pro was on Colnago, I waved at him- he just kept staring ahead. He looked like he was trying really hard not to launch a turd.
I pitied him and his soon-to-be messy spandex and went my way.