this is a description of when your ass getting really swetty. its a combination of sweat and ass. used as a verb, it is when you stick your sweaty ass on someone, usually in the face.
"Demo was pissing my off and wouldn't shut the fuck up up so i swassed him right in the face1'
by stretch May 02, 2003
Sweaty plus ass would = SWASS. Female definition Swassay.
Swass is when you are riding on the subway in Boston and the aquarium doors open. In comes a blouser weighing in at about 300 plus wearing the wife-beater shirt. He stands up in front of you holding the pole. All you can see and smell is SWASS.
by Iknowwhatiamtalkingabout September 04, 2006