Why does john tell Lorraine to leave the monkey house and go home?

In the story "The Pigman" by Paul Zindel, John tells Lorraine to leave the monkey house and go home because he recognizes that they are in a situation that is becoming uncomfortable and potentially dangerous. He feels a sense of responsibility for her safety and wants to protect her from any negative consequences of their actions. Additionally, their visit to the monkey house symbolizes their reckless behavior, and John’s urge to leave reflects a moment of clarity and awareness of their circumstances.