What is the scariest thing you do not want to have happen to you?

I have this fear. That when I turn on the outside light. It lights up someone standing at the window looking in that I didn't know was there. Throw in a clown mask for extra effect and I do not think I could maintain bladder control.
I don't know why I have this fear.. 🤔 Seeing how I had done the exact same thing to my brother whilst wearing a gorilla costume. 😈