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
Another name for a blow job. (Said mostly in New York)
"Bro, that girl gave me a fatty!"
by DannyUCF May 28, 2007
a really fat dude, ppl that you don't like, someone you want to fight.
What FATTY?!? Wanna box?
by leslie March 03, 2005
Unattractive people who will never grace covers of magazines ( except fat people magazines) nor be professional athletes.
Look at that hot, voluptuous fat stripper. "Hey fatty, bend over a little more and I'll spot you a 10".
by Dick Splash November 10, 2003
a big butt
you got a FATTY girl!
by babyboo April 15, 2003
A title resembling Lord or Sire when preceeded by "Witty"
Witty Fatty, you have returned from your quest to the fridge.
by fatty February 24, 2003
He's not good enough for you, but he acts as if he's too good for you. If you need a visual: roll around in bed with 20 lbs. of jello.
Fatty, you are lame, Brian if you lived in Eden.
by Fatty stole my candy July 10, 2008
A fatass human, FAT, overweight.
"Hey fatty, go eat a pizza!"
"OKAY!"
by michaeL January 25, 2004

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