As If There Wasn't Enough Worry About Already ...

... Scott Alexander informs me that I've been at risk for 56 years without even knowing it:

Around the wide world, all cultures share a few key features. Anthropologists debate the precise extent, but the basics are always there. Language. Tools. Marriage. Family. Ritual. Music. And penis-stealing witches.

Ye gads ... how can I protect my nads?