Used to refer to dudes boasting new-found arrogance, acting 'brand new'.
The nicer way to say: "SIT YA ASS DOWN".
For chicks, use 'Hoe Sit'
Dude who just got first girlfriend: "Yo, I think I'm bout to bag like 5 bitches at da club tonight, I'm fly like that."
Girl keeping him in check: "Boy SIT".