I remember a product a few years ago called Mantyhose or something like that. They were like short pantyhose for men with a special tube for your dick to go into. The ad said the constant rubbing of the soft material kept you semi-aroused all day. Like I could handle that!!

I'm not into guys in panties but that new movie about the high school jock all the girls want to kill, I don't remember the name, Josh somebody Must Die or something like that, shows this hunky jock wearing a girls underwear and there's something really sexy about it.