"Sponsormymelon.com!" yelled some guy a few years back and since then the idea has been top of mind.. (sorry).
The Guardian spoofed it when the Cunning crew said they'd sell it... And now, you can find quite a few on Ebay. Here you can Advertise on this mans forehad!, or if you want to *Advertise your logo or website domain on this guys forehead!, here's one that reads " Advertise Your Logo on my Ass (or Forehead)" oooh, cheeky, how about Advertise Your logo on 3 C.I.K.TV staff forehead and help som local kids TV program get some much needed equipment. Seems a worthy cause.
quote from ass-ad at eBay.
As far as asses go, mine is, well, roundish and split down the middle. Kind of what you'd expect. Your logo will be seen by quality boxer-briefs including my Calvin Kleins, and assorted lower-end brief-ware produced by the Gap, Eddie Bauer, etc, (ok "etc.", for the record, includes 3 pairs of Fruit of the Loom 100% cotton briefs - it was one of those stay over at the girlfriend's one night longer than expected impulse purchases). In addition to the fabulous briefs & skivvies target market scoping out my formidable cheeks, my girlfriend will in all likelihood "take a peek" 2 to 3 times a week.