Rapex, the anti-rape condom. - Page 7

On November 27 2006 08:13 DarK]N[exuS wrote:The device is a latex tube fitted internally with shafts of sharp, inward-facing plastic barbs that could be worn by a woman in her vagina, similar to a tampon. Should an attacker attempt vaginal rape, the penis would be hooked by the barbs, causing the attacker pain and giving the victim time to escape. The condom would remain attached to the attacker's penis and, according to the device's creator, could be removed only surgically, which would alert hospital staff and police that an attempted rape could have taken place. -> http://en.wikipedia.org/wiki/Rapex

pretty sure if you've got a bunch of spikes in your dick that won't come off, you're going to stop.