Umbuster Brass Knuckle Umbrella Now For SaleThe internet design concept phenomenon known as the Umbuster has finally jumped out of that nightmare you have about an old man beating you to a pulp in the street into cold, hard reality. That's right—you can start using this knuckle-dusting umbrella to bust up rainclouds and jawbones right now for the equivalent of $287 (assuming that it is legal to own in your area that is). [Srulirecht]