Well, it's just a tube with a row of holes drilled in it, and a membrane(basically a piece of a balloon) on one end. Add propane and a speaker, and...yeah!
LORD LESLEYBLOOD IS AND WILL AKWAYS BE THE KING OF YOUTUBE. YOU PUSSYS ARE NOTHING. LORD LESLEYBLOOD WILL FUCK YOU UP AND THEN FEED YOU TO HIS PET WOLVES.