In good working condition. The opposite of "out of whack".
KJ: "Hey man my car is all out of whack."

GP: "Don't worry I can get it in whack."
by Fisk May 24, 2006
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Computer slang for backslash backslash
Go to whack-whack MyComputerName whack c dollar sign. \\MyComputerName\c$
by James February 24, 2005
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1. adj; something in bad taste or is otherwise unappealing.

2. verb; to murder someone.

3. verb; to masturbate.
1. Yo Freddy, turn off the country music. That shit is whack.

2. Freddy, turn off that fuckin' country music before I go and whack ya.

3. Freddy, I said turn off the country music, I didn't say pull your johnson out and start whackin' it. The fuck?
by Eapert McDangles June 29, 2006
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to masturbate aggressively without stopping until you are finished.
where is tom?
i think he's whacking it in the bathroom.
by Fergieferg July 12, 2009
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There is heaps of meanings for 'whacked'.
a. To be killed.
b. To be hit.
c. Hungover.
d. Stupid.
e. Bloody awesome.
f. Drunk.
g. Stoned.
h. Not working properly.
i. Stuffed.
a. Man his car flipped straight off the cliff, police found him whacked.
b. he was so whacked, face was all bleeding and shit.
c. Ohh man I woke up so festy, my heads whacked.
d. What a fucking whacked driver, ran the red light straight in front of me.
e. You are so bloody whacked man, gotta love ya !
f. I've had so much yo drink me and Maddy are whacked as.
g. Fuck mannn I'm too whacked to talk all your serious shit.
h. Computers bloody whacked, heap of junk.
i. Good luck with that, I wouldn't bother with something so whacked !
by Court Jeremiahh March 28, 2008
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