Does my son think hes black?

so since my son started highschool i noticed some changes, he started wearing baggier clothes and etc, now a few weeks ago i was looking through all his droors out of suspicion, and i found a du rag, some gold teeth, and a crack pipe, he wears huge diamond earrings the size of my hands, and he sags his pants, and hes always bringing home black people (not that thats bad but thats all he ever brings home)and he even talks like them. Please help, what should i do, i dont wanna confront him about this. Advice? Please? Were a suburban white family that live in a pretty well 2 story house.