A 21-year-old Perth man is lucky to be alive after having his stomach ripped open during a beer-skolling game using a home-made device powered by an electric pump. [...] It is believed to have consisted of a helmet fitted with a jug from which a hose was attached to a pump that was powered by a power drill. Another hose from the pump was placed in his mouth and the pump was switched on, pushing beer from the jug down his throat.