A large Joint
Yo, G light up a fatty.
by G January 22, 2003

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Someone who is not fat, but eats a ton. They should be morbidly obese because of how much food they eat, but are somehow miraculously skinny.
Kojo eats a box of donuts after every meal. How is he not obese?! What a fatty.
by Kornelius Jonesworth February 18, 2013

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Another way to call someone fat or obese.
Shut up Fatty, and lose some weight!!!
by kojuhuyh August 12, 2012

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Awesome, great, amazing, etc.
That guy is fatty
by Richy Oves April 23, 2010

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To define greatness of a particular event, object or person. (adjective)
"Sir, I do believe that is a fatty burger"
"Really!? That's awesome, let me have a bite!"
OR
"Man, I took the fattiest dump"
"Oh boy, you sure did"
by Coitey January 13, 2010

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1. Does not mean that your fat as in over weight. It means if you see a person who is always talking about food or always want to eat. So someone says "your a fatty!" as a joke.
2. It could mean that a girl has a fat ass she thick in them jeans.
1. You: Man I want some pizza im hungry!
Bob: Your such a fatty!
2. Man that girl she got a fatty
by Prettyboiswaggz July 10, 2008

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Slightly larger than a chubby, yet not fully erect.
Damn, that bitch gave me a fatty.

Fucking Aye, you gave me another fatty.
by Spike69 August 02, 2006

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defines a person in relation to Fatty Magee from the Adam Sandler skits. Can be used with either positive or negative connatation.
Oh fatty, you're the fattest.
by Mad Hattah July 22, 2003

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