Little Johnny’s teacher was asking all the kids in the class what their parents did for a living. Little Mary got up and said, “my Dad is a pilot, and my Mommy is an architect.” “Great” said the teacher. Michael got up and said, “my Dad is a Doctor, and my Mom is a housewife.” Good said the teacher. Johnny was last in the class and when he got up he said: “My Mommy, she is a substitute.” Knowing better about his background and always striving to correct the kids, the teacher said, “you mean she is a Prostitute?” “No”. Said Johnny, “my Sister, she is the Prostitute, but when she does not feel well, my Mommy substitutes.”