That the woman's body has a magic way of keeping from getting pregnant from rapist sperm? That's nonsense.
Not magical but physical/hormonal from the stress that results from it, according to intelligent callers to the Charlie Brennan show.
It is not “magic”. The trauma and stress of the violence and the woman’s struggle makes the act of intercourse less likely to result in fertilization. Promt reporting followed by medical attention will also reduce the chance of implantation of a fertilized egg. It does happen though and the point is this is the only crime where the perp son or daughter is required to pay the ultimate price (death) while the criminal get a few years in jail.