A naw-dawg is someone who shakes their
head at anything that is slightly unconventional/unique/out of the ordinary, seemingly saying “naw, dawg” as they do it. A
normie, basically.
A term I came up with after watching
Harry Potter in theaters, and a guy in front of us would constantly shake his head every time the characters did something, kinda ruining the vibe of the movie. I kept imagining him saying “naw, dawg” every time he did it, hence the term.