so after pregnant, wife is too horny, couple afraid that the wife would cheat on random dick, so the wife suggest that she would get fucks from younger brother-in-law, husband's younger brother. what about husband? common logic, he have to work, rest, he can fucks his wife but not all day, so having his younger bro fucks his wife is better than lets her going around fucking random dick(s) while he's not at home.