Have you ever wanted to make your own flamethrower? The folks at Flamethrower Plans have put together a resource that shows you how to build homemade flamethrowers. The below video shows a homemade flamethrower that is a combination of a pressure washer gun, a scuba tank, and a blowtorch. There is a latch next to the handle that acts as a safety. The modified tip of the pressure washing gun makes sure you shoot a steady stream.
As you can see in the above video, this is a pretty cool homemade flamethrower. You may want to come up with a good excuse before buying or making one of these.