A tasty little worm said eagerly to its young son. "I am a tasty little worm and I am also your father." The boy replied, "Why dear father are you tasty and not I?" The father worm was taken aback. "Why son, not all worms can be as tasty as I, for I am a gourmet worm, one of the rarest breeds". The son looked puzzled. "But I am made from the same genetic cloth that comprises of you my tasty little father!". The father looked down at the son, and told him the truth, "Son, the truth is. I am not your father".