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air jack

the hand gesture associated with actual jacking off; like air guitar only air jacking off
jake and i simultaniously air jacked all over levi's face and gave him an air facial.
by cheweysmoker October 5, 2008
mugGet the air jackmug.

Jack Knob

Dude, you put the key in the IGNITION Jack Knob
by LSULSUJOE October 25, 2006
mugGet the Jack Knobmug.

Jack Spicer

An evil boy genius from the excellent Y-7-rated cartoon Xiaolin Showdown. He invents different kinds of useless attack robots and is highly failure-prone and -phobic. Looks kinda Goth.
That Jack Spicer's a bumbling, Goth-lookin' evil boy genius.
by 'Annony' June 7, 2005
mugGet the Jack Spicermug.

jacking off

rubbin ur penis wit ur hands or objects
it feels wicked good but its not as good as pussy so guys do it when theyre not gettin any
all guys do it like evry day im doin it right now
by billy bob December 14, 2003
mugGet the jacking offmug.

jack shit

1) A term most commonly used for when people describe that they don't know, or have not done anything.

2) Probably the name of some guy somewhere, who i'd -really- like to meet.
Bob: "Bill, what do you know about egg products?"

Bill: "Heh, Jack shit, Bob."
by Meik April 2, 2003
mugGet the jack shitmug.

Jack FM

A radio station
A computer.
An automation software.
Bunch of 60s-Current Hot AC, Classic Rock, Disco, Pop loaded into the computer.
A guy named Guy Zapoleon telling the stations what to play.
Howard Cogan blabbing the station's name in between songs
104-3 Jack FM
92-5 Jack FM
101-1 Jack FM
97-9 Jack FM
93-1 Jack FM
100.3 Jack FM
We Play What We Want
by 1069 May 23, 2006
mugGet the Jack FMmug.

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 3, 2009
mugGet the jack offmug.

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