When your ass starts to burn and sweat, making it difficult to walk normally. Can be caused by reckless wiping, walking for long periods of time, or a combo of both. Usually occurs after one takes a shit. A common side effect is a smelly ass, that may or may not be noticeable to others. You can temporarily relieve a chaffing ass by going to the bathroom and wiping the sweat off your ass.
Shawn took a shit this morning and around the fifth hour of his shift at work, he developed a bad case of ass chafe.
by Cheeto Dust January 06, 2017