What does Dally do in the movie with the two girls?

Dally walks down the aisle and sits right behind the only two other people there: two Soc girls, "dressed sharp and real good-looking." Dally taunts them even though they ask him to leave them alone, and the redhead, whose name is Cherry Valance, threatens to call the cops.

He put his feet up on the back of the redhead's chair, winked at me, and beat his own record for saying something dirty. She turned around and gave him a cool stare.