...is as offensive to many as mother-son marriage, polygamy, sister-brother marriage, etc.
"......Today, on Maury Povich.......
He married his mother just to make his sister jealous, but is he really the father of her child?
'My Brother, My Son, My Nephew'
....Today on Maury....."
This is really weak.
Nobody is going to make the imaginary stupid connection being implied here.