Today when I shook my chocolate milk, after 20 minutes it turned white thanks to the jack off motion.
by Anonymous October 28, 2003
Get the jack offmug. by Brown Sugar March 18, 2003
Get the jack offmug. 
to look and porn and pop a woody, get some lotion, put a generous amount on your main hand (sometimes other hand if youre looking at porn on internet or computer), grip your penis, then move your hand rapidly up and down the shaft of your penis.
spank the monkey, choke the chicken, beat the meat, yank the yak, masturbate, wank off, whack off, etc.
by sean paul? June 01, 2003
Get the jack offmug. Jacking off is when you take your hand, and grab your cock like there is no freaking tomorrow, make sure you have a firm grip! Move your hand up and down and up and down again and again, if you do it right and long enough, you'll ejaculate all over. Sometimes you want to eat some, so you do. I do it like 3 times a day, and sometimes I'm dry by night, but I love it so much, too bad I can't reach down to give myself a blowjob!
I was jacking off in the bathroom at school and it went "thump, thump, thump" until it just all came out and I was relieved that I let go of my seed.
by Takisha January 01, 2006
Get the jacking offmug. rubbing a smooth long cock up and down and all over, usually using some type of lubricant and usually while looking at chicks getting fucked. after jacking off, you cum all over your own hand.
by loves2jack May 26, 2004
Get the jacking offmug. 1) "Get off the Postman Pat ride, you've been on long enough... JACK, OFF!"
2) "Dude, I am going to jack off."
2) "Dude, I am going to jack off."
by Soiled Undergarment August 15, 2003
Get the jack-offmug.