Nbgaf Posted in N Best definition Nbgaf An acronym for ‘Nobody gives a fuck’.Used to express mass appeal to no one caring. A group consensus of indifference. Girl (to group): It’s my birthday today!!! Group: Nbgaf How satisfied are you with the definition? Looking for Nbgaf meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 86 times.