Not sure you can get there without registering, but after my server logs told me a poster on sex-fetish forum site Fetlife.com had linked to my post about the g-spot researcher’s other theories about women’s orgasms I found a startlingly common but I think pretty backwards assertion by another poster who said

It’s a fact that the study of female sexuality lags decades (or perhaps centuries) behind that of male sexuality so we shouldn’t be surprised that stuff like this continues to surface…

You might have to register to see it but she said here.

Instead I think we know almost exactly nothing about male sexuality except, pretty much…

1. men will put their penises in anything vaguely orifice-like
2. men have orgasms effortlessly if they put their penis in anything vaguely orifice-like
3. the two items above are obviously and universally true of every man
4. unless there’s something wrong with the man

This would be yet another consequence of assuming men are the “norm” against which everyone else is “other.” (Update: A consequence which would more tolerable if items 1-4 were even superficially correct. See also Holly.)

In fact what we don’t know about men’s sexuality would fill bookstores. Assuming anyone was a) curious and also b) unintimidated by item #4, above.

Penises aren’t uniformly sensitive, for instance. Nor, as I’m pretty sure anyone with more than a couple of male partners could tell you, is each man’s penis sensitive in the same spot. If we were curious, in fact, I’m pretty sure we could map homologous “spots” on men, from the glans (“obvious!” except when it’s not) to the frenulum to various spots in the corpus spongeousum between the corpus cavernosa to the base to the perineum to the prostate.

But we’re not. So we don’t.

Quick question for Dr. Spector: What would you get if screened out gay and bisexual men who’s “digital manipulation” might bias the results, then asked 1500 paired-twin men “do you believe you have a so-called prostate gland, a walnut-sized area on the front wall of your rectum that is sensitive to deep pressure?”

Quick answer: Proof that there’s no such thing as a prostate gland.

Just sayin’