I will tell you a story gaf, a story I have told here before, but the moral of this story is to always wear footwear in public showers.
I was visiting a lake in New Mexico, when a friend and I decided it was time to start heading back. It was near dusk, and we wanted to get cleaned up before heading home. There was a public shower on the lake, but seeing as this lake isn't very popular, it was hardly ever used. My friend and I had the place to ourselves. It was starting to get chilly, as it happens in the desert at night, so we tried to hurry. I kicked my shoes off and got in the shower. I finished before my friend, and walked over to the mirror, figuring I'd brush my hair and such while she finished up. I took a step back, and felt a sharp pain in my heel. I assumed I'd stepped on a goat head that someone had drug in on their shoes, and paid it no mind. But then it really started to ache.
I looked behind me and saw something black squirming on the floor. "Great," I think to myself. "I stepped on a wasp."
I get closer, and realize that I had instead stepped on a scorpion. At nearly the same time I realized this, there was a loud sound, and another small scorpion fell from the ceiling. And then another. One bounced off my shoulder. Soon it was literally raining scorpions.
By this time, I was in a lot of pain, and honestly, panicking because apparently the apocalypse had decided to start in a tiny public restroom in the middle of the New Mexican desert.
My friend heard my cries of terror and came and carried me out. My brothers then appeared with big stompy boots and destroyed the horrible beasts.
Basically, scorpion mothers carry their babies on their backs. One had climbed into the light fixture in the bathroom to escape the chilly evening. We turned on the light, it heated up, and baby scorpions started bailing.
TL;DR Always wear shoes in a public restroom/shower, otherwise you could be attacked by scorpions raining from the sky.