My brother and I are close and we share a college apartment together. He lets me watch him masturbate. What I find weird is that when he talks dirty during masturbation, he uses the proper words. He doesn't use rough language or slang. When he strokes his cock, he'll say, "ohhhhhh, my penis is so big." Instead of saying cock, he says penis. When he's close to orgasm, he'll say "ohhhhhhh, my sperm is coming." Instead of saying cum, he says sperm. When he's squirting out his milk, he'll say "ohhhhhhh, my babies are coming out." Instead of saying cum or milk, he says babies. Whenever he needs to masturbate, he says "I have to release my sperm."