A childhood belief about fear of

Up until I was 7, I believed I had to make it down the stairs before the toilet finished flushing, or else I'd be eaten by the 'Bog Monster'. I would stand as far from the toilet as possible before flushing it, then run like hell down the stairs. I used to hate going to the toilet at my gran's house because it had a very short flush and the staircase was very, very long. To make it downstairs without being eaten I had to throw myself off the last 5 or 6 steps, often smashing painfully into the hallway floor. My gran always did wonder why I had to be at bursting point before going, and why afterwards I'd always crash down the stairs and end up sprawled all over the carpet!