Top Definition
A massage parlor, usually located in a strip mall, where the phrase "you want to turn over?" means it's time for "happy ending".
TJ just got back from the whack shack, those Asian girls gave him the 3 finger special.
von Mediumdave22 2. Februar 2011

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A bed with a canopy arranged in such a manner as to allow complete privacy for the act of masturbation.
Billy spends all day hidden in his whack shack.
von njj 1. Oktober 2006

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A make-shift privacy tent built on beds found in collage dorms or the squad bay of a millitary instillation, and used for masturbation.
I think Pvt. Jones is in his whack-shack sarge its moving side-to-side.
von kimjongjr 19. Oktober 2009

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1.
Comes from the word "whack"
"whackshack" Is a term used to define someone unconventional almost to an insane degree. The kind of person that will jump off a 3 storey building into a bush to impress people can be refferred to as such.

2.
Also can mean the house or hang out area for people who are whack
1.
Person- Did you see jonathon run cross that busy street last night?

Other person- Yeah, he's a total whackshack.

2.
Come on boys, let's just leave them to go back to their whackshack
von LastDigit 24. Juni 2009

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1) A make shift lean-to made in ones bed room out of blankets, chairs, pillows, and the bed itself, where one masturbates in privacy.

2) A covered shower in a locker room where one wanks.

whack procedure:
Get in
Get off
Get out
1) Everyone knows what my roommate is doing when he is skyping his girlfriend and brings his laptop into his whack shack.

2) The quarter back swears hes straight, but hes not fooling anyone when he suggests drilling a glory hole into our locker room whack shack.
von Mr. Billy Shears 17. Februar 2009

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