I think he was enjoying the "view", which puts him high on the creep-o-meter.

My natural reaction would be to look back after I first noticed him and say, "How ya doin?", in a measured not-too-friendly tone, and then judge my gut based on his response. Then I'd stop where there were people around, and not engage him anymore, or take the first exit off the trail and head towards civilization or a crowded place. Of course, with hubby there (he's never in front of me, but if he was) I'd do my famous ear splitting whistle and hubby would be right by my side.

The bicycle cop guy would p*** me off, because 'hey, duckhead, I can HEAR my bottom bracket clicking, too! What do you think, that it doesn't drive me nuts with every pedal stroke, especially since I can't seem to figure out what it is?! What do you think I am, an imbecile?"

Karen