The first married a Chinese woman. He told her that she was to do the dishes and clean the house. It took her a couple of days, but on the third day he came home and the house was spotless.
The second married a French girl and he told her the same. On the first day he didn’t see any results. The day after was better, and by the third day, everything was spotless too.
The last brother married an English woman and she was told the same. On the first two days he saw nothing. But on the third day, some of the swelling had gone down, he could see little out of his left eye, and his arm had healed enough that he could fix himself a sandwich.