Catcher in the Rye chapter 6

Stradlater gets mad at Holden after reading the composition saying it had nothing to do with what the assignment was about. Holden then rips it up and throws it away and tries to annoy Stradlater so he begins to smoke a cigarette . Holden tries to hit Stradlater after he doesn't tell him anything about the date but gets pinned to the floor and begins insulting Stradlater causing him to punch Holden's nose bloodying it.