I don't know why, but I find the shirtless look gross, no matter how good the body looks. Since I am not a particularly modest person, I really don't know why I feel like this.
A few years ago, my friend and I were at the end of a ride and we were trying to beat out a severe thunderstorm. We were going down a small hill, almost back to her house, when an older guy, appeared out of nowhere, in the shoulder of the road, running. He was ah, kind of scary looking in demeanor and was wearing nothing but skimpy running shorts; no shoes, nothing. He had long wild greasy hair and he wouldn't move over so I could get by some debris on my bike. I guess the visual image of him stuck in my head.
The next spring, this guy showed up on a group ride I was on and I could not get over it...