Stands for "basically the shit." Basically means that some shit is lit, and it's your shit. Can be used to describe movies, songs, artworks, etc.
Person 1: Omg, 6ix9ine is BTS of the year!
Person 2: No 6ix9ine is just this dude that can't spell english properly and shouts 4 verses over and over again, that only vary from song to song. Plus he a rat. Forget it. Long live the REAL rappers.
A fucked up South Korean band that is scary and is somehow invading the emo and alternative community and is the equivalent of Gerard Way in bright colors on crack.
Kennis; "OMG OmG oMgVeronica have you heard of this band called BTS they're sooooo good you'll love them here" *puts earbud blasting BTS in Veronicas ear*
-Veronica;" Kennis, I have to kill you now".