jack off

Male masturbation; a man rapidly and repeatedly rubs his hand up and down his dick until he hits orgasm.

Done when horny, when porn is plentiful, or to get rid of a boner in class.
Jason had a huge boner in science class, so he ran to the bathroom. But there were a whole bunch of other kids with their pants and boxers around their ankles and their dicks in their hands, masturbating furiously.

There were three guys at each of the urinals, one on each toilet and two more standing in front of each. There was another pair at each of the two sinks, and at least fifteen spread out across the floor. They all groaned as they shot their loads across the room.

"It's a jack off epidemic!" Jason stood wide-eyed as his dick stretched hard against the fabric. He quickly dropped his jeans and plaid boxers and began to jack himself off in the doorway.

More guys pushed against him, trying to get some privacy to jack off in. He felt three dicks strain against his back.

He felt his dick grow larger and larger as more guys pressed against his ass.

Then he woke up. He looked down at the puddle of sperm in his hand, then quickly pulled his boxers back up and laid down to sleep.
by HornyGuy2 March 03, 2009
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creep jack

in warcraft3 when you are killing creeps and someone comes up from behind you and attacks you.
Woah shit0r, some fucking n00b creep jacked my shit. IM GONNA LOOSE TO THIS FUCKING N00b. AGHHHHHG, no townscroll!
by x-pose September 23, 2003
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i-jacking

The crime of stealing electronic music players and/or other electronic media. Derived from the surge of I-Pod related thefts in recent years.
I was the victim of an i-jacking when my MP3 player was stolen from my car.
by LuLu1972 August 02, 2007
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Jack Schitt

A term used for someone who does nothing. Based on the phrase "I'm not doing jack shit."
Tommy is such a Jack Schitt.
by Rellik Uzi August 18, 2010
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Clit Jacking

When a female, during a raunchy sexual escapade, starts to rub her clit in a vigorous way in order to get off faster.
So I hook up with this sandwich artist, I met while ordering a footlong meatball, and right as I'm about to pull out and paint a portrait on her stomach she starts clit jacking, gets off, and puts her uniform back on before I finish.
by Daemien Dawe September 26, 2008
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high jacking

Joe: Hey bra, you were in the bathroom for a really long time.
Jim: Dude, I was just high jacking, gotta get in the mile high club somehow.
by willklinton August 06, 2013
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Jacking Off

The act of consuming apple jacks cereal.
Robby walked in on me jacking off last night and asked if he could join in.
by Pirate Suite January 21, 2008
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