a lot, much, very big.
I hit her and now she has a fatty bruise.
by Me September 16, 2003
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A fat, lazy person; a fatass
"Eh, eh, get me the pizza"

"Ay, get it yourself you fattie"
by Josue123 April 15, 2006
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usually an insecure 13 year old boy who only plays pubg and fortnite
A: oh my god! look at that guy... he's obese!
B: i know right? what a fatty...
A: gross. he's probably a homo too!
by cher-horowitz January 17, 2019
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When you have a boner and you want to tell your friend discreetly.
Hey bro, I've got a huge fatty right now.
by TailGunner06 April 9, 2020
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A Fatty is someone who is fat
"Come on Fatty"
by 123KE April 26, 2021
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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 1, 2003
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