“I’m marked chicken if I punk out at the rumble.”
This quote shows the negative side of stereotyping for Soc’s. This quote limits the choice of the Soc, because if Randy chooses not to show up at the rumble, or chooses to not fight at the rumble, the other Soc’s will think that he is scared/soft because he doesn’t want to fight.
“You can’t win, even if you whip us. You’ll still be where you were before – at the bottom. And we’ll still be the lucky ones with all the breaks. So it doesn’t do any good, the fighting and the killing. It doesn’t prove a thing. We’ll forget it if you win, or if you don’t. Greasers will still be greasers and Socs will still be Socs.”
Randy says this to Ponyboy when they were talking before the rumble. He means that not matter what any of them do, no matter how many fights they have, they’re still going to be in the same place.