LEGO Flamethrower

Just when you thought that the LEGO is a toy, you have folks using LEGO to build weapons. We've heard of a LEGO gun that shoots rubber bands but this gets the cake for the most dangerous (and hence cool) LEGO creation - a LEGO Flamethrower. There's also a video that shows how the thing works... ust wondering if constant usage will melt the bricks.