bar scag Share definition Flag an insecure female who most likely dresses like a slUT to get a drunk man's attention so she can go home and bang him and feel better about herself. Taylor cries herself to sleep after another night of being a bar scag. bar scag by emjaybob January 2, 2016 0 0 Get merch Get the bar scag mug. Buy Now — $32.95 See more merch