A sexual act in which a Male/Female defecates on themselves with their legs closed and leaning over an object. Followed by a partner Male/Female that urinates on the fecal matter; causing the feces to slide down between their legs like a Poop Sailboat.
Mr. Van Den Berg's Poop Sailboat caused a rash down the back of his legs, that was visible while he wore shorts.
One who sneaks quietly into a restroom. Waits until your done taking a dump, and then sneaks into the stall and snatches your dump RIGHT out of the toilet before you have a chance to flush. God only knows what the poop thief does with the dump once he steals it.
John: Duuuuude. I think a poop thief just stole my shit.
Anthony: No way??
John: yeah, one second it's there, the next its gone. o.O
the act of inserting a pipe up ones anal hole and haveing our partner insert the other end up their ass and then 1 poops in the pipe causeing it to slide down in to the other persons ass
When you hold your poop and then start to fart and your farts have to pass through a filter, or screen, of poop.
"Man my farts really stink right now. Oh yeah! That's because I Have to poop and my farts are passing through a screen of poop thus making them stinker. My farts are passing through my poop screen"