(Noun) Just another word for big, fat, floppy boobs. Also a great nickname for friends if you want to piss them off.
Holy hell that chick has some massive fatties!!

Hey fatties! How ya doin? (say this to a guy to be most effective)
by Brian October 13, 2004
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Someone who is obese or overweight. It can also be used to insult the non-obese/overweight when insults are on short supply.
Jake; he's a fatty.
by Ryan April 06, 2004
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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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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 measurment of size meaning of great magnitude. Derivation: A big joint.
Man test was hella fatty.
Have you seen that fatty bastard. He must weigh 3 hundred pounds.
by anonomous. May 20, 2005
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