UK: The medieval concept of "Legitimate rape" has been used against women for centuries

The Guardian

'Legitimate rape' – a medieval medical concept

The idea that rape victims cannot get pregnant is a very old medical theory

Generally, though, the idea that a women had to orgasm in order to conceive (although not necessarily at exactly the same time as her male partner) was widespread in popular thought and medical literature in the medieval and early modern period. By logical extension, then, if a woman became pregnant, she must have experienced orgasm, and therefore could not have been the victim of an "absolute rape".

Read it at The Guardian:
http://www.guardian.co.uk/science/the-h-word/2012/aug/20/legitimate-rape-medieval-medical-concept