"But some people act like they think I live in the jungle someplace"

In this quote, Roberto Clemente is revealing frustration with how some individuals perceive him. He feels that they have a misconception about his life and where he originates from. By saying "reside in the jungle someplace," Clemente is implying that these individuals believe he originates from a primitive or uncivilized location. This might be due to his Puerto Rican heritage or his profession as an expert baseball gamer. Clemente is likely tired of being stereotyped and judged based on these assumptions. He wants people to see him for who he truly is, instead of making assumptions based upon their own predispositions.