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1. fat stacks
A Variation on stacks. Has to do with the handling of a lot of money. ie. X thousands of dollars
We went to Vegas and Jonny B. bet fat stacks.
by JakeThePimp Sep 28, 2004 add a video
2. fat stacks
A large amount of something, usually weed or money.
#1 Hey man, i havent blazed up in ages, you got any weed?
#2 Yeh of course, i just got some fat stacks yesterday.

#1 Hey man your wallet's so fat!
#2 Yeh man, i got fat stacks of cash.
3. fat stacks
a term of endearment for naughty wisco peeps
here's your breakfast in bed, fat stacks.
by ziggy stardust May 28, 2005 add a video
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