Same as "jerk off" (masturbate); also used as a noun to reference a feckless, no-account person, usu. male.
Up until the 1980s, "jack off" was considered more a Southern (USA) locution than "jerk off," which was considered more urban and Northeastern/Midwestern states. Considerable swapping around has taken place in the meantime, probably because of increased social mobility and relaxed codes of censorship.
Up until the 1980s, "jack off" was considered more a Southern (USA) locution than "jerk off," which was considered more urban and Northeastern/Midwestern states. Considerable swapping around has taken place in the meantime, probably because of increased social mobility and relaxed codes of censorship.
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1)...All little Timmy can talk about is sex. If I weren't so polite, I'd have told him to go get laid, or to jack off in a corner...
2)...'If y'all boys didn't jack off so much, you might amount to something.'... (closet-case coach to members of the high-school basketball team in 1971 movie THE LAST PICTURE SHOW).
1)...All little Timmy can talk about is sex. If I weren't so polite, I'd have told him to go get laid, or to jack off in a corner...
2)...'If y'all boys didn't jack off so much, you might amount to something.'... (closet-case coach to members of the high-school basketball team in 1971 movie THE LAST PICTURE SHOW).
by al-in-chgo April 28, 2011

Another term for the verb everyone knows and loves. Jacking off is a favored past time for numerous men and women alike that consists of slow or violent rubbing on the genital parts. This is often accompanied by various forms of stimuli such as pornography and/or sex toys.
It is important to take note that Jacking off is when the action is happening.
It is important to take note that Jacking off is when the action is happening.
Male Adult: I was jacking off to some BDSM the other night.
Female Adult: That video made wet so I started jacking off.
Another adult: Man John is always horny he can never keep his Dick in his pants so guess what he did in the bathroom? I heard him jacking off.
Female Adult: That video made wet so I started jacking off.
Another adult: Man John is always horny he can never keep his Dick in his pants so guess what he did in the bathroom? I heard him jacking off.
by Jimple Sack July 15, 2014

A person who was subjected to the Church of Jesus Christ and Latter Day Saints at an early age. After smelling the Bull-Shit, then wised up and joined the rest of the sane world. Also see: A man who choses not to marry more than one woman at a time, or live on a compound.
"That Bill Bratsky used to be Morman, now the son of a bitch is on welfare and drinks all my beer! God Damn jack mormon!"
by Ryan from Zion August 13, 2006

There are several definitions floating around out there - but this is an original scenario and should be considered an authentic Cactus Jack henceforth -
If lonely in the desert, take a small cactus and carefully remove all needles. Insert a knife in the bottom and hollow out the pulp. You should now have a flap of cactus skin with a nicely lubricated, aloey, gooey lining. Carefully insert two fingers and feel around the inside looking for any "ingrown needles". Once satisfied that your cactus meets all safety requirements, you may proceed to have sex with it. Afterwards, rinse and repeat as desired. The flap will fold easily and can be kept discreetly in your pocket.
If lonely in the desert, take a small cactus and carefully remove all needles. Insert a knife in the bottom and hollow out the pulp. You should now have a flap of cactus skin with a nicely lubricated, aloey, gooey lining. Carefully insert two fingers and feel around the inside looking for any "ingrown needles". Once satisfied that your cactus meets all safety requirements, you may proceed to have sex with it. Afterwards, rinse and repeat as desired. The flap will fold easily and can be kept discreetly in your pocket.
When Casey was doing infantry training out in the desert, I heard he got lonely in his fighting hole and made himself up a nice little Cactus Jack for company.
by Daddy Ruxpin November 9, 2010

A childlike white adult who can't think outside the box & is corny & sweet.Also when you dig deep inside you find a toy, something for children to play with.Or crackers term used for pale square people who (jack) culture, land,history,etc.
by Fred E. Douglas June 24, 2011

by BoobieG August 2, 2018

by turd furguson September 26, 2013
