On the night of the fire, the doctors originally didn't want to discuss Johnny's and Dally's condition, saying they would only talk to family. But Darry finally convinced the doctor that "we were about as much family as Dally and Johnny had." They Curtis brothers decided to head home for the night, and Pony and Two-Bit waited until the next day to visit their two friends. Because Johnny was in critical condition, he was not supposed to have visitors.
But Two-Bit wouldn't take no for an answer. That was his buddy in there and he aimed to see him.
The two boys "begged and pleaded" with the nurse, but she would not allow them to see Johnny until a doctor intervened. Since Johnny had been asking for Pony and Two-Bit, the doctor decided to allow them in, telling the boys that
"It can't hurt now."
Although Johnny was in a critical condition. The doctor allowed them to see Johnny because he was about to die.
Also they were annoying the nurse...