To releive one's thelf in thexual enlightenment by rubbing the head, or pinching the cliterus over and over and over and over.
by Alex highley September 15, 2003
Get the jacking-offmug. 
Get the jack-offmug. To be honest if you are reading this you are probably jacking off right now so fuck you, you sick bastard
by DFINK5299 November 30, 2016
Get the Jacking offmug. by Anonymous October 29, 2002
Get the jack offmug. A reciprocating (often involuntary) motion of a hand around a peanus resulting in a spluttering of a gooey substance from the orifice of the above mentioned peanus. Often, the peanus belongs to the hand but not always. If unobstructed, the travelled distance of the substance varies directly as the pleasure the owner of the peanus will experience.
Yesterday I jacked off (regular verb!) on a girl sleeping next to me in the train and I polluted her forearm with my sperm! I was very proud of myself!
by maldoror June 23, 2004
Get the jacking offmug. to use your hand or an instrument to stimulate the male genitalia, ultimately resulting in an orgasm.
It helps to think about kinky sex trysts with five-year-old boys when jacking off. You will cum quicker.
by GuidoPosse69 February 5, 2005
Get the jack offmug. A person who prevents everyone around them from discussing the finale of "Lost" because they haven't watched it yet. The prefix "Jack" comes from the first name of the candidate Jack Shephard. The suffix "off" refers to the person being a jerk-off.
Co-worker 1: Holy cow! Did you see "Lost" last night!
Co-worker 2: Shhhhh! This Jack-off dvr'd it last night and watched the ball game instead. We'll have to talk about it tomorrow.
Co-worker 1: What a jerk-off!
Co-worker 2: You mean Jack-off.
Co-worker 1: Yeah, whatever.
Co-worker 2: Shhhhh! This Jack-off dvr'd it last night and watched the ball game instead. We'll have to talk about it tomorrow.
Co-worker 1: What a jerk-off!
Co-worker 2: You mean Jack-off.
Co-worker 1: Yeah, whatever.
by mondo270 May 23, 2010
Get the Jack-offmug.