A grandfather went to visit his college-age grandson at the dorm. Grandpa was astonished to find that his son was living a life of sin and corruption, as shown by the very high-heeled shoe nailed over the doorway.In my day, grumbled Gramps, we would hang a horse shoe over the door for luck and then study late into the night hoping to pass our classes.But grandpa, replied the grandson, that is a whore’s shoe.