This is based off of the anime One Piece. It's a more adult joke I thought up one day. The skeleton, Brook, is still alive even with no organs and can still do things such as eat and poop (apparently) so.... could he still have sex? LOL
Check out my profile for some more of this.
And, if you're interested, check out this amazing One Piece parody comic that I was sort of inspired by: http://jaredofart.deviant art.com