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1.
to become unconscious; to faint
We all saw Theo pass out when he accidentally sat on his own testicles.
by yorrick hunt January 22, 2008
 
2.
1. To be in a state of near or virtual unconsciousness as achieved through the excessive use of intoxicating substances, esp. alcohol.

2. To greatly resemble rapper 'Tinie Tempah' in appearance.
1. Emily blew several raspberries on the cheek of her companion as well as stuck her index finger up her friend's nose, but Shannen failed to respond as she was about to Pass Out.

2. "Woah - look at that dude's bling - he's such a Pass Out!"
by AwesomeChickWho'sAwesome August 21, 2011
 
3.
To lose consciousness.
The pain was so intense I thought I was going to pass out.
by Ayzmo February 16, 2006
 
4.
To consume a vast quanity of alchohol... so much that your body decides (without your permission) to shut down for the night, resulting in a sleeping effect that is not real sleep because your brain has just shut off in fear of being damaged more than it already has.
"After a couple rounds of beer pong, Taylor totally just decided to pass out!"
"I got home last night and apparently mush have passed out, because when I woke up this morning, my jeans were still on!"
by Jordanne Way December 17, 2006
 
5.
1.
v. To be overtaken by illness, or intoxication.

2.
v. To go to sleep. Also, crash.

3.
v. <Slang> To have sex. Usu. used to keep haters in the dark.
Definition 1: "Whoa, those shrooms just made him pass out..!"

Definition 2: "What a wuss... he just passed out."

Definition 3: "I'ma go pass out."
by cha0s January 27, 2004