jack shack

Usually specific to soldiers, or other people who are forced to live in close proximity for long periods of time without either sexual activity or privacy, a jack shack is a small shack made out of blankets, ponchos or poncho liners that is erected so that the builder can masturbate in relative peace. It is often explained away as a means to block light, or provide privacy to change, despite being erected almost exclusively around one's sleeping quarters.
syn: whackatorium

He had only been in Iraq for a week, but he had already built an intricate and comfortable jack shack.

by Barchack April 13, 2008

Jack Sack

A type of manbag, but far more cool! Used by Jack Bauer of 24 to carry his awesome and unlimited arsenal of weapons to take on the terrorists that threaten the US

Jack: Dude, that manbag is so lame, you need to get yourself a Jack Sack

Tony: Copy that

by Paulstudy March 27, 2010

Jack Stack

A collection of pornographic magazines, typically located in the bathroom or bedroom that is used to visually aid the jacking off or masturbation process. This collection of magazines usually includes periodicals such as; Jugs, Beaver, Ass Jacks, Hustler, etc.

Wayne: Dude, you see the Jack Stack in Bruce's bathroom? Wow, impressive!

Frank: Yeah man, that was killer! I had to open them up and rub one off when I was at his house last week!

by Techsan93 December 9, 2008

stack n jack

One man lays on another man both facing up, the man on top reaches between his legs and jerk the bottom guy off.

Dustin and Logan stack n jack every Tuesday night.

by thatsickdude December 13, 2014

jack shack

An establishment that provides cost effective massage treatments of the sexual variety. Also known as a massage parlor.

Jonathan frequents jack shacks because; (a) he's drunk, (b) he's horny, (c) he loves the smell of Clorox, or (d) champagne rooms are too expensive.

by ItchyandScratchy October 23, 2005

jack shack

a secluded cabin or lean-to in the woods for pulling oneself in

The Unabomber spent much of his time in his wooded jack shack hideaway.

by Unchangeable Bird January 25, 2020

jack shack

A secret place for self gratification

We couldn't find Dave, then we realized he was in his jack shack.

by Tolchester Tugger August 10, 2016