1. What a man does when his penis erects into a throbbing, veiny, pulsating, kinetic hard-on, stroking the shaft repeatedly up and down with his hand until the penis barfs up massive amounts of white-nut vomit in either a clean, streaming squirt or in a gelatonous, oozing mass.
2. To make one's dick sneeze, throw up, explode, ejaculate, cough up white blood, splooge, climax, orgasm, erupt, belch, detonate, spew, or spit, possibly on another person's face.
3. A person who amounts to nothing, or should not be taken seriously.
2. To make one's dick sneeze, throw up, explode, ejaculate, cough up white blood, splooge, climax, orgasm, erupt, belch, detonate, spew, or spit, possibly on another person's face.
3. A person who amounts to nothing, or should not be taken seriously.
1. "Boy, I just watched too much Full House, I need to go jack off".
2. ".. and then she got down on her knees and I jacked off all over her face".
3. "Dude, you need to get up off of your ass and quit watching gay porn, you good for nothing jack off".
2. ".. and then she got down on her knees and I jacked off all over her face".
3. "Dude, you need to get up off of your ass and quit watching gay porn, you good for nothing jack off".
by Mr. Friscus February 3, 2010
Get the Jack Offmug. if you're under 13: you're not cool enough to know what it means. come back when you wake up and its sticky in your danger zone.
if you're over 13: why the FUCK would you need to look up the definition of "jack off?" did your balls not drop yet?
if you're over 13: why the FUCK would you need to look up the definition of "jack off?" did your balls not drop yet?
by un-dumbassify yourself, please January 3, 2010
Get the jack offmug. 
by ~Keyona January 9, 2004
Get the Jack Offmug. by Anonymous April 30, 2003
Get the jacking offmug. by ThatGuyWithTheHook May 4, 2010
Get the Jacked Offmug. When a young man or old man (can be both) get hard or also known as horny, they're penis starts to rise up. If they don't have anyone at the moment to help them with their needs, then they go to a private place such as the shower or their bed or also local wal-mart and go in a up and down motion on their penis. Causing them to feel the pleasure of having sex with a girl, or also feel the burn. When they reached their maximum pleasure a tasty substances called cum squirts out, and that is when he or she knows they are done jacking off.
by iknowuwithallmymight May 17, 2010
Get the Jacking offmug.