Don't go exploring strange, moist, damp caves, kids. You could end up with some strange spores in your hair that take root and slowly make their way through your skull, and into your brain. Next thing you know, you're hijacked, and your personality shifts completely over course of about a month...
In this young man's case, he went from a reserved missionary to thickening, cock-craving, hypersexual slut.
He's more fun to spend nights with now, at least.