It's a hybrid word of don't and aren't. Which means you don't and you aren't going to basically do shit. It can be used in various terms and situations.
My lil bro walked in my room n said I smell weed n I said No you darn't n darn't gonna say shit to know one either.
Darn't get ur neck wet.
Darn't get ur neck wet.
by Breezy Bri May 15, 2014

by arrow_yoghur December 24, 2020

by arrow_yoghur December 24, 2020
