18 And if a man shall lie with a woman having her sickness, and shall uncover her nakedness;
he hath discovered her fountain, and she hath uncovered the fountain of her blood: and both of them shall be cut off from
among their people.
This was obviously written by a man. They must have been thinking "Hmmm... she seems to get bitchy every
month for a few days. How can I get away from her while she's feeling that way?"