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

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Someone who poos a lot and eats a lot... Is quite violent to certain people but other than that quite nice
YOUR SUCH A FATTY!
by Sumo14 November 30, 2016

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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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a girl with a fat ass
Guy1: DAMN! shawty ass is big
Guy2: That's what u call a FATTY!

bootybuttass
by nellam22 May 12, 2009

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A derogatory term used to describe overweight people
Look at that fatty over there she needs to lose weight
by Russo919 March 18, 2013

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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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