NAW-NAW....is a Term used by Grandmothers that are to young and sexy to have grandkids....They are usually Sexy Beast and make the best grandparents !!!!
when saying this phrase..say it in a high pitchedpissed off tone.. it means something along the lines of "ooh no you didnt" or "bitch please, what in the hell were you thinking"... also can be used as a form of disbelief in a situation
"aww hell naw you did not just cross me like you know me...step back bitch or my homies gon woop yo ass"
You: I was getting down with my bro last night and he said "Man you're doing a great job back there, oh also I forgot to mention, I thought End Game wasn't that great."
Other Bro: Naw that's some wack shit dog, that sounds like you guys were Naw Doggin' It