Top Definition
512
The numbers imprinted on a generic brand of percocet.
we just snorted three 512's in the back of class
by snowy black November 12, 2006

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512
The area code for Austin Texas (ATX)
A:What you doing with those jalepenos?
B:Just staying true to the 512.
by PolloLuX December 03, 2007

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512
International organization that began in 1996 in Fuquay-Varina, North Carolina. Members are identified by a small trinket, usually carried on their keys. Sometimes they wear specially designed apparel, which is always green and white. This organizaton represents peace. Unless, provoked.
No examples. If you know 512, you know. If you don't, then you aren't a member. maybe someday you will be.
by Momma512 May 12, 2006

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512
ATX aka Austin Texas!!!
eyy dat gurlz a Nancy n she reppin tha 512
by ~nAnCy~ July 12, 2005

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512
Banging someone five times in 12 hours. Busting a nut is not required, but five separate "sessions" are mandatory.
"Dude, last night I was so horny, I went home and 512ed my woman. I think my dick is going to fall off this morning."

"What are you doing tonight?" "I'm headed out with this hot chick. If things go right, I'm gonna 512 her."
by Mitch Kramer June 08, 2005

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512
A stardard memory size...
Im computer keeps freezing up...i need to bump up my RAM to 512
by WEEBER July 31, 2005

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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