A condition in which your buttocks and other nearby regions get overly moist often causing discomfort resembling the feeling of not wiping your ass. This happens typically when working in intense heat, during masturbation, refusing to wipe, and some other isolated situations. Also, this condition leads to a not so pleasant stench often leaving you extremely self-conscious if the situation cannot be remedied immediately.
Bryce-"Why were you walkin' all funny today when you came into work?"
Slade-"I'd been outside waiting on the bus and got swamp ass."
Slade-"Word. I had to go to the bathroom and handle it quick before that fine ass new girl saw me or else she'd think I'm dirty."