Much like the word "Jawn", yaint sounds like it can be used for anything and everything but is usually referring to a hot girl. Not to be confused with the phrase "you ain't". Yaint was made popular in Phoenixville PA just outside of Philadelphia. Often used in conjunction with the word yanger.
-man, check out that yaint.
-did you see the biddies on that yaint.
-wow, look at that yaint and the other yaint with that yanger.
yall ( you or you guys) aint(are not)
yaint going there tonight?
A three way contraction combining the words you are not or you ain't.
y'ain't got shit on me son!
yes or this is it
some one ask me what do you think about this jean i asid it yaint .mean this is it or yes
~A variation of the word naint
~Yaint means yes, or yes it is
A:"Hey, are you home?"
A: "Cool, I'll be right over, we can watch Rambo"