Did you encounter any embarrassing things when you wiped your back in the bathroom?

Once I took a bath in the bathroom, I was with my colleague, and then my colleague hired a back cleaner. His skin was too slippery when rubbing his back, and then when rubbing it, I rubbed it into the water and poked off a piece of skin. At that time, he was in pain, too. Alas, why did he feel something was wrong? At that time, we all laughed.