‘We need to talk penises and vaginas’

“It used to be so simple,” journalist Katie Couric says in the opening narration of Gender Revolution: A Journey with Katie Couric

“Let’s talk about penises and vaginas,” Couric says to gender author Sam Killermann at one point. He responds: “If you haven’t already talked about penises and vaginas, we need to talk about penises and vaginas.” And from that amusing exchange we’re off into some fascinating questions: does external genitalia define gender, and what is the difference between gender and sexuality?”