jack ninja

a person (typically male) who is skilled in masturbating without being noticed by those around him. term coined from SRK

The jack ninja was so stealthy, he managed to get his business all over that girl's back without her noticing.

by cynik February 15, 2004

hit a jack

to Smoke a ciggarette

Yo, you wanna go hit a jack?

by David Russell September 12, 2005

Jack White

Singer/Guitarist for The White Stripes and Raconteurs,also insanely hot guy in incredibly tight pants with extremely large penis.

"That Jack White's pants are so tight his extremely large penis is going to burst forth"

by Joanie Baloney November 10, 2008

jimmy jack

to waste a salesperson's time with no real intent of buying.

Alvin spent 2 hours looking at every Miata on the lot, but finally left empty-handed, which was no surprise to the armenian salesman, he knew when Alvin walked in that he was in for a jimmy jack.

by sandspit October 18, 2007

jack party

A party that is dominantly male, involving masturbation by all those who attend, although the masturbation is not intended to be mutual. You can commonly find people doing a circle jerk or playing soggy biscuit.

Adolescent: "We havin a jack party at Craig's house!"
Ghost of Christmas Past: "I would also like to come to Craig's house to wax my candle..err..jack off.

by Jack Party October 1, 2007

Pussy Faced Jack

A man named jack, who has a pussy face. white trash long greasy blonde hair. Shower Bi-weekly; offen smelly like a rotten pussy. Plus his face is so terribly un kept hairy mess that it looks like an amish pussy. Go Fuck Your Self Jack.

Who was that? Oh its just pussy faced jack, he wants to come over. Tell him to go fuck himself.

by thisy guy June 7, 2010

Jaakko

An extremely cute male, they mostly have spiky hair and a jacked six-pack. The special Jaakko surprisingly resembles a siamese cat, named Sid

A cat named Jaakko

by siamese cat March 20, 2012