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Generally someone whose actions would lead one to believe that the person is using crack cocaine due to the stupidity or messed-up-ness of their actions.
Used to describe something stupid, messed up or to express frustration with something
Man, you on crack! You will never get with that chick.

That biology report is on crack man.

Dude, Ms. Stanton's on crack! She gave me a friggen C+!!!
by TheDuke January 25, 2005
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May 14 Word of the Day
Intelligence agency term for "psychological operation". A government or corporate-sponsored operation, usually taking the form of a "terrorist attack" or "crazed gunman on a spree", with the intent of panicking the public into demanding more police and laws inhibiting freedom. Psyops are usually carried out by drugging a civilian or group of civilians with aggression-promoting drugs, psyching them up, arming them, and sending them out to commit mayhem. Government-sponsored terrorism. See also blackshirts, conspiracy
Person A: Man, that nutcase Martin Bryant guy shot 35 people in Tasmania!

Person B: No, he wasn't a nutcase, that was just a psyop so the government could have an excuse to ban guns.
by Mystikan April 11, 2006
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1) Unbelievable; insane.

2) Good, bad, or extremely out of the ordinary.

Note: Both definitions an be used in both positive and pejorative sense.
I did horribly on that test. Question 5 was on crack.

I'm so happy I got promoted. My new salary is on crack.

My cell phone is on crack. I need a new one.
by Matthew Morrison July 20, 2006
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if something is mad, bad or just plain wrong, it can be described as "on crack", or, for added emphasis, "so on crack".
by robert June 16, 2003
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Also used to describe a person on serious drugs.

Also used to describe a person using Crack-Cocaine.
Jamal is "on crack", thats why he is in the rehab
by Michael January 18, 2005
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