There's about 5 minutes on this topic starting at 11:45.
The gist of the talk is the male nipples are a leftover from the female, and the female orgasm is a leftover from the male. Both are worthless in terms of evolution as neither provides an adaptive advantage in reproduction.
See Dougster? I'm not just a pervert, but a Darwinian pervert.


Reminds me of a joke from an old buddy of mine:
Q: "How can you tell if a woman is faking her orgasms or not?" A: "Why would anyone care to begin with?"