jack the stack

shortened version of jackin the smokestack, meaning to jerk off or masturbate.

only used by men of course.

james: wtf are you doing?
me: chillin at home, about to jack the stack.
james: haha, n1.

by rayjay April 4, 2006

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 7, 2008

Jacking Your Stack

a simple expression to say your are, of course, masturbating.

"Are y-you Jacking Your Stack?"

by JackMasterBater November 9, 2023