It’s ultimately just more shit he imagined to be true. He claimed it was a law enforcement term used for reported rapes but law enforcement disagrees it’s a term they use.

But basically he’s saying of you are raped and you report it to law enforcement the body suddenly is able to shut down the ability to pregnancy.

Best outcome is he is really really stupid and was told about the morning after pill they offer with the rape kit and didn’t understand. Probably because his congnitive dissonance as an America Christianity™ kicked in and replaced the science with magic.