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 01, 2009
by LEE The Dope Form November 18, 2008
1. "That guy is such a fat ass"
2. "Who is that fat ass?"
3."Who was the fat ass who wrote this shitty ass definition?"
2. "Who is that fat ass?"
3."Who was the fat ass who wrote this shitty ass definition?"
by Weegeeman September 21, 2016
A nigga that live in jimtown but don’t go to a gym, smoke all day, sleep on the floor, and got a dirty ass house
by Hsbfbd February 26, 2019
As in a Fat Person and/or an extremely large buttocks. Can also be used in an insult, calling someone "fat" may not always work, so adding "Fatass" My help to boost your insult to astronomical heights
by Shane December 14, 2003
by Alex Reid plop October 10, 2019