Have you ever married a sibling? Like, say, a Somalian Muslim immigrant, who wears a kerchief over her head to connote deep religious integrity and modesty, marrying her brother? What is that like? I mean, really. Can you imagine the quarrels at home? “You know what I hate most about you?” “What?” “I hate your parents. They are the worst Satanic in-laws a man ever could be stuck with!” “Well, the people you are calling Satanic are your parents, too.” “Don’t you dare speak that way about my parents! I’m talking now about your parents!” “My parents are just watching...