anything or anyone considered unpopular is often described simply as "ain't"
instead of longer sentences,
making people sound incredibly white trash and/or stupid
also often heard as "ain't shit"
Yeah man, he ain't.
yeah i know, he ain't shit!
A single word that is equivalent to other words such as:
1) Am not
2) Are not
3) Is not
==> Most likely originated in the Southern States of America as it flows easily with their accent but has now been used in many places around the world.
"We aint going."
"He aint going."
He ain't goin' to eat those nasty baked beans.