In chapter 5 when johnny and ponyboy had to cut their hair off and bleach their hair to descise them and they got really mad. They were mad because their hair is what was most important to them and thats how they were noticed in the streets.
In chapter 7 when Johnny was in the hospital and was in critical condition and the whole gang was so worried. It was either he died or he would make it out alive or he would be crippled for the rest of his life.
When they saw the church on fire they ran inside the burning church which we do not expect. They weren't even scared they ran in with no fear to save the kids which some thing we completely don't expect.