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 astronomicalheights
Synonyms for fat ass
On this page, you will find 30 slang terms related to fat ass. Some of the top words include: flub, weeble-wobble, porker, Poon, Fatso, and 25 more.