First off, I thought this would be a juicy thread with pictures of lovely manly biker butts. Hmph...I'm just a little disgruntled

Now then, trust me, this is not limited to biking. Used to see this in the gym all the time. I had this problem myself a time or two, as well. I'd bend over in front of the mirror, but indoor lighting doesn't always work.

Heck, I say just tell them, whether you know them well or not (ok, not the guy you are biking past...at least someone you are biking WITH...and the guy with the underwear...that's just ew....ick....gross.....). Be like, "so, hey...have you checked out the new Pearl Izumi shorts? I'm thinking you haven't looked in a while as it looks like you might need a new pair....say....right NOW."