look up any word, like yeet:
someone whose corpulence is too much for their frame.
michelle is such a fatass
by dj druzy May 31, 2006
one who must wear thongs because their GINORMOUS bottom does not fit in regular underwear
Since my locker is near the english office, my fatass english teacher can hear everything I say. i.e., "I've had sex in the shower five times!"
by WOOPSIE March 30, 2004
Someone who eats a lot. They don't necessarily always have to be fat.
Bob: Are you gonna eat all of your fries?
Boob: Yes, fatass.
by arizona July 14, 2012
michael nord- having qualitites of a homosexual man, chronic masturbation, laziness, and also may be referred to as jiggaboo.
Hey fatass get over here
by jimbob7861 March 11, 2010
The act of eating a lot more food than everyone else in the group, causing everyone to call that person fatass.
Little Jimmy had three bags of candy and a large soda at the movie theater, so everyone, including his parents called him a fatass.

10 years later, Little Jimmy entered a middle school hot dog eating contest. Little Jimmy gobbled up record high 676 weenies, shattering previous record of 325 set by Michael Moore and tied by Rosie O'Donnell. Everyone, including the president of hot dog eating contests, called Little Johnny a fatass.

Another 10 years later, Little Jimmy finally moved into his own apartment where no one could judge his eating habits. Little Jimmy ate 62 big macs to celebrate. Despite dying of a clogged anus the next morning, nobody was around to call Little Jimmy a fatass, so technically he was not a fatass.
by susepenederes December 24, 2009
Anyone whose body fat is exceeding healthy limits.
A person whose body is grossly out of proportion due to excess fat.
A very overweight person with the metabolism of a slug.
Being a fat ass can make you miserable because you begin to think you can't lose that weight.
Some people are proud of being a fat ass, but most people aren't.
Some people can't help being a fat ass due to medication or other medical conditions.
"Hey, Fat ass, don't steal my ice-cream," said seven year old Tanya.
by MadamexXx March 03, 2009
1. A person who is really fat and annoying.
2. Connor, in trinity high school
"Connor is a fatass"
"Which Connor"
"The one sit next to me in music"
by asharshwehwhwhars September 01, 2008