According to Todd Akin, women do not get pregnant from "legitimate rape" because our vaginas, ovaries, thingermabobs, whatchacallits, pupillary sphincters, or whatever all that mess we have down there has a barrier that distinguishes between good guy welcome sperm and bad guy rapist sperm, so women can only get pregnant when they want to (which is good news for women suffering from infertility--more on that later)
Akin, of course, is attempting to claim that abortion isn't "justified" in cases of rape, because from what he knows from doctors, not only is pregnancy from rape rare, but the female body has ways to shut that down.
It's at this point I'd wonder if these doctor friends of Akin, assuming they live in this universe and outside the funhouse in his head, are actually eccentrics whose parents gave them the first name "Doctor" and raised them on a commune in the desert before releasing them into the mainstream world, having them stumble into the sci-fi section of a local bookstore and taking what they found as fact, but I've never read sci-fi about magic, rape-rejecting vaginas, so presumably these are real doctors, and the general public has been kept in the dark about the all-encompassing power of lady parts.
Since this discovery, the shocking and tragic fact is, due to the discriminatory nature of girly whozeewhatsis, we the general public are forced to acknowledge that any sperm deposited in an unprotected hoo-ha (one without a condom, birth control pill, or enchanted copper tree blocking the womb from achieving it's natural pregnant state) that doesn't yield a baby was left there by a foul, dirty rapist.
This dismaying news that every man who hooked up with a girl without a condom, every guy who had an oopsie with his girlfriend that didn't bear fruit, every man who took more than one try to impregnate his wife is a rapist, while devastating, is great news for our legal system. No longer will judges and juries be burdened with things like "testimony", "evidence of assault or intoxication", "victims who said 'no'", they can simply haul every instance of unprotected sex in front of the judge, give the girl a bottle of water and a pee stick, and three minutes later extend a hearty congratulations to the parents-to-be, or toss a young man in prison and ship the protesting woman off to counseling to deal with the trauma she doesn't even know she's experiencing.
Thanks for the salvation, Representative Akin. Our women, our legal system, and society at large are eternally grateful.