Superfecundation

Pete Doorna is a Dutch schoolteacher married to Nancy. Nancy travels to Bonaire with their son Tom, who is participating in a tennis tournament.
The neighbors' housekeeper had climbed the wall separating both homes and saw Pete swimming naked in the pool with Lizette Zunia, their housekeeper. She called Nildo Janu (the gardener) right away and told him to come and see what his girlfriend was up to. Nildo got so mad (angry), he grabbed a brick, with which struck and wounded Pete in his ribs. Nildo was incarcerated. When he was released from prison, he met Lizette who told him that in the meantime she and Pete were living together in a luxurious apartment in Mahaai. She also told him that she was having Pete's baby. It ended up that Lizette had twins (Yongo and Bongo, a light- and black-skinned baby). Pete, however, was of the opinion that the twins were so extremely ugly. Therefore, he took them to have a DNA test done.