Why do you think Ponyboy said hed killed Bob and that Johnny wasnt dead?

Ponyboy's assertion that he killed Bob and that Johnny wasn't dead reflects his deep emotional turmoil and guilt following the traumatic events they experienced. In the heat of the moment, he may have been trying to cope with the overwhelming reality of loss and violence. By denying Johnny's death, he clings to hope and a sense of denial, struggling to accept the harsh truths of their situation and the consequences of their actions. This illustrates Ponyboy's vulnerability and the intense pressure he feels from the conflicts surrounding him.