from a movie... so a man and and a woman are making love, when their young boy walks in. upon seeing his parents, he cries and runs to his room. the father says ""i'll handle this"". he walks to the boys room and finds little john on top of grandma, just giving her the business, going up and down, up and down. then the boys looks at his father and says, ""its not so funny when its your mom, is it?""