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1. A common side effect following a large consumption of fat. Usually associated with nausea, heartburn, indigestion, upset stomach, and explosive diarrhea.

2. A gang up of several morbidly obese citizens who raid small gas stations and steal their stashes of Twinkies.
"Yo n1gg4, I ate dis smoked turkey leg at my lady's parent's house the otha night and I got a muthafuckin' fattack. I was sittin' on their Toto for forty-five minutes and it smelt like toxic, dawg."

Cashier: "I dunno what happened, man. They just came in, knocked everything down, broke the windows, stole all the Twinkies and left... There was nothing I could do to stop them. I was so shocked at their agility, man."
fattack by zoooooombie-er July 2, 2009
Related Words
A fattock is a rotund, larger friend within a social group that always eats too much and often orders the most food when eating out etc.
Simon: Marc, why have you ordered SO much food... it's 10am?
Marc: *insubordinate yelping and denial*
Simon: You're such a fucking fattock.
Fattock by mumpaidforthis August 19, 2014
Old timey New York slang for a wallet
As Nicky left the bathroom, he reached for his fatpack as he approached the store counter
Fatpack by Coolpunch September 10, 2009

fatjacked 

A person who is both muscular and fat.
Woah, Tom needs to lay off the bacon - he's starting to look fatjacked!
fatjacked by SuzanneG January 17, 2008

fatback chopper 

Cleaving the buttocks in twain. Similar to a danza slap right along the buttcrack.
The bitch didn't like it in the ass so I had to teach her what's what with a Fatback Chopper.

Fattocks 

The buttocks of a grossly obese individual. Most often a ghastly and unnerving sight to behold
Crikey me! Look at the fattocks on that Mc Donalds addict!
Fattocks by [Harry^Hardcore) July 19, 2007