This is an acronym for: Kiss My Ass So What? Popularised by 'Michael Blackson'
Weak Man 1: Hey man, that was my parking you just took.
Cool Guy: KMASW?

Gentleman 1: Oi!, go clean your room, we have visitors coming over.
Gentleman 2: I don't care what other people think about me, KMASW?
by Fazel Dubrocka May 20, 2018
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