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Any Corporate Big shot only interested in chasing personal wealth.
Any CEO of any Major Company.

"I hate those Fatcat's at (insert phone company)"
FatCat by thincat11 August 26, 2009
Related Words
When a ladies crotch area bulges outside of her underwear.
The fatcat on that chick is out on the prowl tonight!

Did you see the fatcat on that chick?!
Fatcat by Nikixachet January 28, 2023
Acronym: For congressmen and taxing authorities of the federal government.

Federal
Alliance of
Thieves
Commandeerers of
American
Taxes
Better make this a cash transaction otherwise the FATCATs in D.C. will take a chunk.
FATCAT by Voxtorious April 8, 2009
A female with a very large print in her panties or crouch area.
"Yeah I like her with the fatcat right there!"
FATCAT by Lo - Ski August 21, 2006
When someone follows a trend just because they think its cool
I hate that Gemma likes soccer just because the world cup is on at the moment, she is such a Fatcat
Fatcat by litterbug39 October 7, 2012

Fatcat 05 

A YouTuber who simps for almost every animated female cartoon character
Boy, you have a crush on Pacifica northwest who are you Fatcat 05?