What’s the silliest thing you believed as a child that you still find funny?

At about the age of 5,I thought that if an egg was kept for a time and not eaten,a chick would eventually peck its way out.So I took an egg from the kitchen,hid it under my bed in hopes that a chick would hatch out - after a week or so my mother found the egg and wondered why on earth I had put it there!