Top definition
stimulating your penis with your hand to cause orgasm and ejaculation. Male masturbation.
Brian had the blue balls so bad he had to jack off as soon as he got home.
by Marty October 19, 2003
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2
To play with your dick until you cum.
I had to jack off, because I had the massive blue balls.
by Jack Balls May 11, 2004
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3
To masturbate.
Can also be used to unexpectedly shock people.
Grandma caught her 15 year-old grandson jacking off (masturbating) and she passed out, had a massive heart attack and died.
by chikillanto August 22, 2003
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4
When A Guy Holds His Dick And Rubs His Hand Up And Down Getting Faster Until It Feels Good And He Sperms.
My Friend Doesn't Get Any Pussy So He Likes To Jack-Off.
by *JeNnA* May 04, 2004
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5
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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6
To masturbate; the stimulation of a male's penis until orgasm is achieved and ejaculation occurs.
Jill didn't want to have sex right now, so Jack decided to jack off.
by Phillip Knowles January 18, 2006
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7
too masturbate, to stroke your penis until it ejaculates
dude, im so horny, im gonna go home and jack off to some porn
by dadouf January 11, 2002
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