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1.
An unsightly, obese person with a propensity toward laying around and eating. Possesses a severe aversion to physical labor or exercise.
Adam: Is Ben playing basketball today? Charlie: No way, that fatbody is on his couch covered in potato chips and grease like he always is.
by Arulio December 03, 2007
 
2.
1 A person Male or Female who likes food too much, does not excercise, and generally lays around plaing video games all damn day.

2 A person who excercises but to no avail as they won't give up their damn cheetos and chocolate cakes.
So and so is a total fat body. They never ever try to excercise or diet.

Good lord if that fat body gains any moew weight I'll just have to kill myself.

You are not allowed to eat jelly donuts because you are a disgusting fat body!
by Snake December 02, 2004
 
3.
An unsightly, obese person with a propensity toward laying around and eating. Possesses a severe aversion to physical labor or exercise.
Adam: Is Ben playing basketball today? Charlie: No way, that fatbody is on his couch covered in potato chips and grease like he always is.
by Arulio December 03, 2007
 
4.
Large, lazy, fat person
"Blasco is such a fatbody."
by Dain Bramage February 08, 2003
 
5.
An incredibly obese person who suckles milk from a rabid raccoons teet.
what's your name fat body?
by Sergeant Hartman June 26, 2003