A little boy walks into his parents bed room to find his mother on top of his father riding him. The mother sees her little son and gets off her husband as her son leaves the bedroom. The mother concerned about what her son had seen, gets dressed and finds her son in his bed room. The son asked his mother what she was doing to daddy. The mother replies, "Do you know that daddy has a big tummy?" The boy says, "Yes he does have a big tummy." Mother then says, "Well I have to get on Daddy's tummy flatten it, so it doesn't stick out that much."
The boy says not to do it anymore because it will not work. The mother is confused at her son and asks how come? The boy says to his mother, "Because when you go out shopping, the lady across the street gets on her knees and blows daddy's stomach back up.