Behold, the Nightlighter 36 Taser-Ignited Potato Cannon, perfect for gunning down poncy manager types that refer to you as "bagel boy." Assuming, that is, that you have a potato, PVC pipe fittings, a taser, wire, solder, spray adhesive and a general tool shop hidden in your desk. (Who doesn't?) This video brought to you as an infomercial by William Gurstelle, author of Whoosh Boom Splat: The Garage Warrior's Guide to Building Projectile Shooters. Remember, always wear your safety goggles. Found via BoingBoing, which has also has a list of Gurstelle's other homebrew weaponry literature.