"Rape has become endemic in South Africa, so a medical technician named Sonette Ehlers developed a product that immediately gathered national attention there. Ehlers had never forgotten a rape victim telling her forlornly, 'If only I had teeth down there.' Ehlers came up with a product she called Rapex. It resembles a tube, with barbs inside. The woman inserts it like a tampon, with an applicator, and any man who tries to rape the woman impales himself on the barbs."