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22.
1. The action a guy is doing when masturbates.

2. A person who is a motherfucking asshole dipshit. Basically. Also can be called a Jerkoff. (See 'Jerkoff' for more information.)

3. A nickname you give to someone named "Jack".
1. I had some good porn in front of me, so I just had to jackoff to it.

2. Guy: *Slaps girls ass*
Girl: Damnit! You're such a Jackoff!

3. For Jack's birthday, I gave him a card that said "To Jackoff"
by FangPawnFire December 31, 2008
52 33
 
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
11 1
 
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
17 11
 
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
7 4
 
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
5 3
 
27.
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
31 32
 
28.
to masturbate; a jerk; an asshole; Dale Ross; one who manipulates; brainwasher; penis
That jack-off just served you with court papers.
by pissedasfuk April 19, 2009
8 10