Gee, this is so subjective. On a young, fit guy, a tattoo can look really sexy. On the other hand, I saw an--ahem--older neighbor in a bathing suit a few days ago. He had two tattoos and it looked just plain icky.
And that's the crux of the issue I have with tattoos. I would totally love one now that I'm still young, firm, and cute. But how will it look when I'm 70?