Why do you think the boys pick Caveman as a nickname for Stanley?

The boys likely choose "Caveman" as a nickname for Stanley due to his physical appearance and demeanor, which may remind them of a primitive or rugged figure. Additionally, the nickname reflects their desire to mock him, reinforcing their social hierarchy and asserting dominance. It also highlights the themes of bullying and identity within the narrative, as Stanley grApples with how he is perceived by his peers. Overall, the nickname serves to underscore the boys' camaraderie at the expense of Stanley's individuality.