A method of masturbation that is similar to "jacking off" but the masturbator stops beating his meat when he reaches optimum hardness (about 15-20 ohms or 3-5 minutes, depending on stamina level) instead of ejaculating all over himself and/or the area of seminal wreckage. This is usually performed immediately prior to sexual activity. May encourage an amateur robber to steal (jack) valuable things from other people.
Hoe: "Man is that all you got? You really need to go somewhere so you can jack on and hit dis shit right!" Jack: "No prob, just give me a handjob before i have to bust out da Playboy magazine again..." Hoe: "You know my hands can't fit dat little ass worm you call a dick, go to the bathroom!" Jack: "Alright, I'll be back." (Goes to the bathroom and jacks on, and comes out wearing a superman suit with dick hanging out) Jack: "Have No Fear, SUPERMAN is here!" (Dives straight into the pussy) Hoe: "That was so much deeper... Where's my money?" (Jack gives her $350) Hoe: "Wow, i thought you didn't had it in you... You're my hero!" Jack: "As long as my Jack is on, anything is possible!" Hoe: "Whatever." ((Meanwhile, in the streets)) Nigga: "Yo homeboy, u down for hittin deez licks wit me n my goons?" Homeboy: "Hell yea, as soon as i het a chance to jack on first."
by ogdajuiceman November 29, 2010
Get the jack onmug. 
by That duude February 8, 2019
Get the Jackingmug. 
Kind and funny. Good-looking, and in love with a Kristen. Always will be, even though they might have a crush on someone else.
Scared of telling someone how they feel, though the person usually feels the same way.
Scared of telling someone how they feel, though the person usually feels the same way.
by JK22 August 6, 2011
Get the Jackmug. 
Someone who you could never forget, the kindest person who is not afraid to say how he feels. He has the strangest of friends and is very easy to talk to. You should never walk away from a Jack, it is the biggest mistake you could ever make.
by someone irrelevant May 2, 2015
Get the Jackmug.