We’ve seen smart helmets, cheese helmets, and imitation skull helmets, but I can’t say we’ve ever seen a walnut helmet or butt helmet. Perhaps there wasn’t much demand for such things. Well, in this age of the long tail, someone is sure to buy a helmet that makes you look like a golf ball because… okay, I don’t have any reason to believe that, but somehow I know it’s true. I can feel it in my watermelon. More at Good (NSFW helmets alert).