A jumpsuit with a conductive coating or outer shell containing thin wiring, juiced with some amount of voltage I'm not qualified to quantify, would shock or burn anyone who tried to grab you. Leaving the jumpsuit turned on all the time would run down the batteries, so it could be activated by a hand-held switch as needed. Like when you're sitting in Santa's lap. Could also be used to keep dogs from grooving on your leg.-- luxlucet, Dec 29 2004random, halfbakery