A case called "Bug Baby" fought in The USA High Court and published in Medical Journal. A husband claim that baby is not belong to him while wife claim that baby belong to him and I don't slip with any else. They went to High Court. Investigation revealed that baby was belong to his friend. But his wife insisted that this is his baby I did not sleep with his friend. further investigation revealed that two men had sexual relationship and his friend's sperm or germ some how travel from his anal exit to his pines and end up in his wife womb and his baby born.