A childhood belief about fear of

I used to believe that when you flushed the toilet, you had to run out of the bathroom and touch the vase that was in the hallway. But it had to be done before the toilet finished flushing, or you would die in your sleep that night. I did this for years. I'm almost 30 now, and I still wait until the last second to flush the toilet so I can leave the room before it finishes.