Whatever the case, "sexy" blokes underwear all looks terrible and just reminds me of Peter Stringfellow.
Hahaha! BBG, you're so right! *Shudders at the thought of Peter Stringfellow in his underoo's!*
Women really don't find "humourous" underwear all that funny or sexy to be honest. If I pulled down a guys jeans to find a zebra-print thong hiding there, I'd pull the jeans back up and walk away in horror!
The male genitalia is exceptionally difficult to make look attractive though. Where as ladies bits can all be neatly tucked away in a sexy set of lace bra and panties, men have a lot more to.... errr, display!
My personal opinion is a nice, clean, pair of boxers is the way to go! You may think of them as functional, but women see them as ultra sexy! There really is nothing more attractive than a guy in a pair of baggy, ripped jeans with the waistband of his boxers just peeking over the top (shirt optional!).
It's important that you feel comfortable in them though. If you're into the baggy shorts kind of boxers then go with that! If you prefer the tighter kind that cling to your body, then stick with it! Just make sure that they're freshly washed and not covered in some embarrassing design (please - no puppies or love hearts!).
Oh and for special occasions, go commando! 