Someone who is extremely proud of their laziness and should be worshipped for their ability to avoid burning calories.
by Sean Connery February 26, 2003
Get the fat assmug. 
Verb. To carry out activities that may result in one's heine increasing in size, such activities include; eating large amounts of fatty foods, and sitting at home playing computer games all day.
John: I'm going to order 3 pizzas, then consume them all whilst playing COD4
Claire: Stop Fat Assing, you'll become a Fat Ass
Claire: Stop Fat Assing, you'll become a Fat Ass
by Dorrrraaaaaa July 1, 2009
Get the Fat Assingmug. Kim Kardashian.
Eric Cartman.
Any person with a large unattractive rear end.
A painfully honest description of an oversized butt.
Not quite wide load, but getting close.
Eric Cartman.
Any person with a large unattractive rear end.
A painfully honest description of an oversized butt.
Not quite wide load, but getting close.
by jsd9632 January 17, 2012
Get the fat assmug. by hell rising February 21, 2019
Get the Fat assmug. by mtrain March 18, 2007
Get the fat assmug.