There is a joke that you don't close your eyes in the shower at night, and then bring your camera.

You know, there is a ghost in your family called "Bathing Ghost". Ghosts only appear when you take a shower. They come out as soon as you close your eyes. So the next time you take a shower, keep your eyes closed and put a camera to take pictures of the whole process. Remember not to watch it after filming. After seeing the ghost, you ran away and sent me. I'll seal it for you with magic.