HOWTO make a head-mounted water-cannon

Here's instructions for building your own "Ultimate Water Gun," which ingeniously combines a gold Evel Knievel helmet, a vintage fire extinguisher, and a whole lotta water to make a head-mounted water-weapon of doom.
These pages are all about the Ultimate Water Gun -- the water weapon of the millennium. It consists of a fire extinguisher that discharges its contents under high pressure through a spray nozzle mounted on a motorcycle helmet. Using a hand-held cable release and wearing the tank on your back, it is possible to feel a rush of power unparalleled in history since the mighty dinosaurs roamed the earth.
Link (via Monochrom)