NFG

No Fucks Given.
Used when you are done with someone or something and fed up and don't want to deal with it anymore.
Basically when you don't give a fuck.

Guy#1: Dude I heard your ex is saying so much shit about you bro!
Guy#2: NFG man, bicthes gonna hate.

"totally failed my math test, NFG though everyone failed that shit"

"I should be studying right now, NFG I'm gonna go party anyway"