A state of intoxication well past not only the legal limit but also exceeding a person's physical safety.
"Oh damn, its only 10:00 and John is already passed the fuck out"
by Andrrew July 27, 2006
1. to lose consciousness due to lack of oxygen.

2. fall asleep due to lack of energy
M: (Stuffs cock in mouth of F)

F: (Gags)
M: You can't breathe! Pass the fuck out!

"I'm so tired, I'm going to PTFO when we get home
by Scott Soon August 11, 2009