Jack off

Composed of two words, jack and off. See those for the individual meanings.

I helped my uncle Jack off his horse.

by N. 1. August 26, 2006

Jack Off

To masturbate.
Can also be used to unexpectedly shock people.

Grandma caught her 15 year-old grandson jacking off (masturbating) and she passed out, had a massive heart attack and died.

by chikillanto August 22, 2003

jacking off

Causes Pleasure and Anger. The pleasurable part is pre-ejaculation. The Anger part is post-ejaculation. This is the part where the man becomes mad at himself for wasting 30 minutes of his time. The world suddenly becomes clear and the chemical imbalance is one again balanced. Too bad no man learns this lesson and history repeats itself.

I had a great time jacking off, up until the end.

by Patrick April 23, 2008

jacking off

rubbing the penis so he spits up his cum

what I'm doing as I'm writing this, oh man just ejaculated everywhere

by I'm jacking off September 7, 2003

jacking off

when a guy rubs his big throbbing cock cuz he can't put it in my pussy cuz i am too busy rubbing it to notice him

by sexybabe August 21, 2003

jack off

too masturbate, to stroke your penis until it ejaculates

dude, im so horny, im gonna go home and jack off to some porn

by dadouf January 11, 2002

jacking off

Giving the 'Private' a dishonorable discharge.

Battling the Cyclops. (Or.. how to kill a Tennessee eel.)

by Private P. Nuss August 16, 2004