Bryan Johnson says he didn't teach his son enough about sex and wants to change that. "He is 20 now, and we were talking about sex. He had these questions, and I was like, 'I've never educated my son on sex,'" Johnson, the tech entrepreneur known for his pursuit of longevity , told executive editor Zak Jason at Business Insider's The Long Play event on Tuesday. "We, of course, have the basics covered, but his only source of education has been porn," he said, adding that there's an "entire