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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a very large wade of chewing tobacco
"damn dude, thats a fatty dip"
"yea i know, killed half the can"
by Ted March 05, 2005

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Me, I eat too much (so far today 2/3s of a large chocolate cake, 1 tube of pringles with dip, 2 pancakes and half a tub of Ben and Jerry's - and it's only 11am!) never exercise and am proud to show off my 250lbs in a bikini in summer. Watch out world we're taking over!
Fatties are everywhere
by flic January 09, 2004

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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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Also can be large amount of dip (smokeless tobacco) placed in one's lower lip.
I'm about to put in a fatty of Skoal.
by arghx May 01, 2003

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noun - a person that is extroverted to the point of nausea, often to overcompensate for poor looks or a large frame/body type. Due to the psychological affect of being overweight, the "fatty" tries to overcompensate this negative with an overly obnoxious personality and attitude.

adj - of or exhibiting the "fatty" lifestyle.
Jesus, Pam needs to shut up already. She's such a fatty.
by thecajunshocker February 23, 2012

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A person who is annoying or inhibiting your progress.
Person 1: Ogga booga!

Person 2: Stop being a fatty and start helping me cook
by Oliver Wernick June 26, 2009

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Very large cigar.....
Lets go smoke a fatty (cigar) man....
by slong1 September 19, 2008

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