look up any word, like b4nny:
 
22.
1. Verb. Exercising the art of masturbation
2. Verb. To create an orgasm simulating another sexual partner with the hand or other masturbating aids (e.g. fleshlight, hand, dildo)
3.Noun. An asshole, homo, or otherwise retard who's by calling them a jack-off is saying that they shouldn't have been born and was a waste of sperm which is a jack-off
4.Noun. A waste of sperm produced by the art of masturbation
Tom is a porn addict, therefore he likes to jack-off.

Tom jacks off in public for everyone to view therefore he is a jack-off.

Tom likes to jack-off so much his girlfriend has nothing to do but, jack-off.
by Tom February 27, 2006
 
23.
reason my right arm is much bigger than my left
Kid to anothr kid: holy shit! look at his arm
another kid: omfg
(they sees his left arm)
kid: ohhhh.....he probbly jack off
anothr kid: lets add that to our arm workout bro
by jjtheblack October 01, 2011
 
24.
Noun: A person, either male or female, who wastes a car salesperson's time when that salesperson could be doing something either more constructive or entertaining. Used as the strongest epithet for a non-buyer in the retail automotive industry.
"Would you believe that fucking Jack-off had Johnny test drive him in three cars then left without so much as a writeup!!" Also, "Beat it, you Jack-off!" Frequently shortened to "Jack", such as "What a Jack!"
by daxwes September 18, 2009
 
25.
1. Adjective: When a person or a group of people mess around and get absolutely nothing accomplished and just have fun. No sexual conduct of any kind is made.

2. Verb: When one decides to rub their genitals; See Masturbate, Masturbation. Sexual conduct can be made.
Example 1:

Guy 1: Hey man, you should join our Rugby Team, all we do is jack off during practice. It'll be fun

Guy 2: What kind of jacking off? Throw balls at each other? or just mess around and have fun?

Guy 1: Yeah, mess around man, not masturbate

Example 2:

Guy 1 sticks hand in pants and grabs genitals

*fapfapfapfapfap*
Guy 2: EW MAN THATS GRODDY!
by whathe12 November 12, 2011
 
26.
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.
.
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 10, 2011
 
27.
To wank your dick.
Jakum had a boner in pe so he went to the toilet but when he arrived he saw a Jack off centre!

There were boys relieving themselves everywhere! He got his big dick out and jacked off ! He wanked his dick until he shot a load out !

A few minutes later the pe teacher arrived , his face droped but he joined in the wanking club. !
by yep9 July 20, 2014
 
28.
to grad the base of the penis and slowly pull to the tip repeatably till you orgasm.
nick: how the date man? john: bad she didnt show i had to jackoff all last night. nick:oh.
by zsadist 28 May 02, 2011