Jack and Jill 

Jack and Jill is (1) a black preppy clothing brand (2) a very, very old organization founded in the 1930's, for black upper class children, to really network with each other and meet each other through different chapters around the country, and was founded by seven black women.

Most prominent blacks in America have their children enrolled in Jack and Jill because it teaches them about their black identity. Jack and Jillers wear Jack and Jill clothing.

Jack and Jill by Mike Varsity December 28, 2005

sperm jack 

To commit forcible theft of sperm.

After Jane handcuffed John to the bed she preceded to jack him off in order to extract sperm. When he climaxed she put the sperm in a small container, got dressed, and left. John was sperm jacked!

sperm jack by J-Fad December 15, 2008

jack-off 

To grab the hard, erect penis and rub it in a firm motion up and down until it turns red and is towards the point of ejaculation.

I haven't jacked-off in a while. So I'm gonna make up for loss time and jack-off for 18 minutes straight.

jack-off by Bentropelex November 23, 2003

Jack Shephard Special 

A drink and a cry. Based off the character from the tv show Lost's propensity to both cry and drink, sometimes both.

After losing his girlfriend, Bill decided to have the Jack Shephard Special.

Some of Matthew Fox's other characters enjoy the Jack Shephard Special as well.

Jack Shephard Special by Lost Watcher February 6, 2009

jack up 

1. Incrase sharply

2. Inject illegal drugs

3. Raise a car to be able to do mechanical work

1. Jack up the oil prices

2. Jack up heroin four times a day

3. Jack up the car and change the tyre

jack up by osmokozmo November 13, 2007

Anal Jackson 

During anal sex, the male ejaculates on the back of the neck of his partner, resembling the mullet of country music star Alan Jackson.

After Stevie B gave Laura the Anal Jackson, she started singing "Little Bitty."

Anal Jackson by The Beef September 24, 2005

dry jack 

The ability to perform serious masterbation on one's self without the use of genital lubrication which may lead to the inevitable cock chafe!

Keep that dry jacking shit up and its bound to fall off Jimmy!

dry jack by ChangWang April 30, 2003