Because weed turns it's junkies gay, they all do something called "weed boofing," where they get a hose, and shove one end up their butthole, and use the other end to blow smoke up their own ass as they fantasize about raping children, animals, and decaying bodies. Due to the severe self-induced mental handicap, known as cognitive impairment, acquired through their junkie addiction, they forget which end of the house is the butthole end, and end up sucking and swallowing their own poop, too mentally handicapped to even be aware it happened.