The act of putting your penis into an unsuspecting and sleeping victim's hand. While being careful not to wake the person, you proceed to thrust your hips until climax. The next morning the person will awake with crusted semen in/on their hand not know where it may have come from.
My god Sandra, after I passed out last night, I think Steve may have come into my room and hand jacked me.
by Stumpie2012 June 12, 2009

by Wilford Brimley's stache October 16, 2008

borat creates this humerous moment. merely a cathphrase consisting of 3 words, "who is jack?" can be said in a various amount of situations, all equally as humerous.
1.*man with car jack* And this is the car jack
*borat/you*yes... and when will jack get here?
2.*man with bowling jack* you must roll the jack.
*borat/you* ah ok, so who is jack?
3.*man with jack* hello, meet jack.
*borat/you* lik the jack nicholson? "i hold up the bank"
*borat/you*yes... and when will jack get here?
2.*man with bowling jack* you must roll the jack.
*borat/you* ah ok, so who is jack?
3.*man with jack* hello, meet jack.
*borat/you* lik the jack nicholson? "i hold up the bank"
by derrty_harry April 14, 2005

A inbred robot from Sheppey, who dislikes all human's and devours small children. A fire burns from his head, where the devil is known to have stayed.
*During an exorcism* Get the Jack Tweedy out of you Joe! Clean his gingerness! Burn away the impurity!!
*Joe* EEEEUUUUURRRRRGGGHHHHHH!
*Joe* EEEEUUUUURRRRRGGGHHHHHH!
by Anononononononzonononononymous May 21, 2011

A total, complete doofus who just can't seem to get anything right, ever. Can also be used to refer to an animal, such as a dog, who acts totally off-the-wall, unpredictable and sometimes anti-social.
That goddam black catahoula just went after my neighbor's friendly dog. She can be such a jack-a-leg sometimes.
by superaynumerouno July 13, 2009

by boiboiboi15 September 17, 2018

by Jackrim June 16, 2011
