when a male tug and pulls on his attachment until thick, oozy liquid comes shooting out of the sometimes small part of a males body. But if your names Jonny, said attachment is huge.
Damn dude, i just finished jackin off, now i feel so relaxed and ready for the day.
by Kevin Nunez January 02, 2012
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When one inserts both testicles into a woman's vagina whilst vigorously jackin' off on her abdomen, hence the name.
Just like Jack and HIS beanstalk, last night I carefully planted my two seeds and was Jackin' the beanstalk all over Mary.
by Very Wise Man February 09, 2011
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A slang term reffering to the act of sexual intercourse. Or the act of hijacking vagina.
"Dude, you smell like ass, have you been jackin squiff"?
by J Langley November 22, 2006
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(băk'jăkin') v.- An approved method of masturbation in the workplace in which you use the upper posterior side of a willing co-worker to rub your genitals on in a slow, sensual motion. Grunting noises are an optional way of showing approval in your back jackee, but can make for awkward moments.
Chris, noticing Curt's lusting gaze at his boner, decided a back jackin' was imminent.

by boner gazers March 04, 2009
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Straight Jackin' is the act of making love to ones self, with strictly no female aid. Further still, there can be no existing sexual relationship with a female at the time you are said to Straight Jackin'. In summery, Draining your nuts with No downside whatsoever.

Straight Jackin' can be compared to the notion that you don't pay a prostitute for sex, you pay her to leave, only Straight Jackin' is a far superior ideology in that there is no chance of contracting an std, no money spent, and even more importantly, no female afterthought.

Join the movement!
"Straight Jackin' will save you that Bullshit!" - Crunch (The Big Hit - 1998)
by Pok'er Star May 04, 2011
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The act of stealing someone's style. To copy, pose, or imitate someone else. Your too lame to have your own style.
"Maan all theez punk ass bitches be Swagga Jackin, get your own shit."
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