In Chapter 5 of The Outsiders, what did Johnny admire about Dally?

In this chapter, Dallas Winston (Dally) comes up to the old church to see Johnny and Ponyboy.  He had told them to go up to the church to hide after the two of them killed the Soc (Bob) who had hurt Johnny so badly in the past.

Dally finds Johnny and Pony and wakes them up.  While Pony is reading the letter Dally brought, Dally smokes a cigarette that Pony gives him.  Dally curses the cigarette because it is the wrong brand.

When he does that, Johnny admires how well he can curse.