Fart, as you know, is a terribly effective weapon. It's only problem is aim and distance. You can't aim the bad smell and it's only effective in small areas. Until now.
Japanese prankster FARu ARuFa has created the Fart Cannon that lets you rip one towards an unsuspecting opponent far away.
First, you need a cardboard box and some tape:
Cut a round hole in the box to complete the air cannon, then test it out:
Success! Then, you need a hole in your pants ...