An appallingly large percentage of young men in a remote Papua New Guinea village injected a mystery substance into their penises, with the aim of making them bigger. The reason? Because they believe that having a bigger penis will enable them to exert mystical control over women. And now, their penises may rot off.
From the article:
The young men sat pensively, chewing betel nut and letting the nurse’s words slowly sink in. I took the opportunity to ask them why they did what they did. They became animated. Having a big penis would give their girlfriends overpowering sexual pleasure, they said. The young women would “writhe like snakes” and “bellow like pigs,” they told me in their inimitable Papua New Guinean idiom, giggling. But they pointed out that they did not regard this pleasure as a magnanimous gift. On the contrary, they explained, it was like a spell or a hex. Making a young woman writhe like a snake or bellow like a pig was the strongest form of love magic. It would ensure that any woman who slept with you would follow you wherever you went and do whatever you asked.
A big penis, in other words, was a means of controlling women.