Top Definition
Basically, you do not care about whatever someone is talking about, or what they are refering too.
Alex: Someone made a rumor about you.
Amber: I ain't on that shit!

Whitney: But I wanna go to the mall!
Crystal: I ain't on that shit!
#i don't care #it doesn't matter #doesn't apply #who cares #that's stupid.
by Amber Walker September 07, 2006
5 Words related to I ain't on that shit!
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