pretty self explanatory. An act of jerkin it, or tuggin the bugger. Otherwise known as masturbation.
Jon: "Yo, did you do your english assignment last night?"

Me: Nah man, I was preocupied jackin the beanstalk.

Jon: You been jackin the beanstalk AGAIN?!

Me: 3 times a day bro.
by J Benj October 12, 2007
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imitating another persons original look and/or attitude by dressing or acting like them.
"I just bought these really obscure nikes and the next week I saw steve wearing the same pair. He's swagga jackin' me!"
by thecream March 06, 2009
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Another typical way of describing a women masturbation. just like a guy jackin dick, Jackin Flaps is jackin it with a womens vaginal flaps.
Jenny was Jackin Flaps in her bathroom upstairs during the party last night.
by The Stuffinator Knowhow March 05, 2015
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When someone is tap dancing and jacking off at the same time.
The students who did a performance of Jackin' and Clackin' for the talent show were expelled.
by Tuturuu~~ December 12, 2015
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The act of grabbing or smacking an apple bottom booty
"Yo, You see that girl over there wit tha Apple Bottom."

"Hell yea, tht butt sho is ripe dawg, Im finned to go ova there and do sum APPLE JACKIN."
by Mr. Apple Jack March 05, 2008
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To steal another musician's beats and using it for your own music
Oh shit, Darwish is accusing you of jackin' beats homie!
by wheezyfish December 07, 2010
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