A fork of Rural Dictionary
Applied by a guy when a girl is hot, or to draw attention to the hotness of a girl. Comes from the chorus of the song 'Get Low' by L'il Jon (3, 6, 9, damn she fine)
Jack: Hey Sam, look at that girl over there. Sam: Damn! Jack 3, 6, 9 Sam: Damn she fine!! Greg: Yo man, she a 3, 6, 9!