A girl who is a try-hard whore. Dyes the complete shit out of her hair, cakes on make up like there is no tomorrow, and try's to steal other girls men. In the guy aspect, it is a boy who plays many girls at one time.
"Oh my gosh, Tara keeps trying to get with my man!"
"Yeah, and that's the third time she dyed her hair this month too, what a Shank Flag."
"Joseph has been telling me, Angella, Rylie, and Josie he wants to date us! He's a straight up Shank Flag."