Crocodile Poop Contraceptive
The use of fly poop as medicine raises some fascinating questions. Not just about its effectiveness, if it actually was effective. The more fascinating question is just how did people back then, long before microscopes were invented, even manage to spot, let alone gather, tiny fly turds? However they went about the collection of fly poop, Egyptian doctors had a good reputation in the ancient world. As a result, many contemporary cultures looked up and tried to emulate Egyptian medical practices.
The ancient Greeks in particular borrowed a lot from the Egyptians. One of those borrowed things was a medical prescription that used crocodile poop as birth control. Ancient Greek women believed that crocodile dung inserted into their vaginas would serve as a powerful contraceptive. It might have even worked. At least in the sense that to encounter a vagina full of or smelling like crocodile poop might have been such a huge turn off, that it eliminated any desire for sexual intercourse in the first place.