Traditionally thought of as a ratio of 1 to 2, or a 50 % chance at something, the 1 out of 2 refers to an extreme type of diarrhea. It feels and has the sounds effects of a number one, but exits from and smells like the number 2. ( see butt-piss)
Jake: "oh man, i was on the highway trying to squeeze out a fart, and i totally 1 out of 2'ed it"
Tim: "man, i hope you showered yourself"
Tim: "man, i hope you showered yourself"
by sam boosak January 1, 2010