An example of an old wives' fable would be, "An apple a day keeps the doctor away", or, "Breaking a mirror will bring you seven years bad luck" -- Stories that are not true, but passed along to younger generations.
If you turn a baby upside down, they will get ther nights and days mixed up. , If a baby see's their own reflection before they are a year old they will die before they reach one year old. , If a baby pee's on you it is good luck.