No swinging allowed
This riddle is a non-sexist, non-sectarian and non-abusive version of a puzzle I heard recently. A priest has the task of arranging the transport of three married couples across the bay. The couples are avowed "swingers" and the priest wants to prevent them from indulging in this activity. Specifically, he has to ensure that none of the three women is ever with one of the men she is not married to, unless her husband is also present. The problem is that only two people can cross at a time. The priest does not cross, but he needs to work out the logistics of the moves in such a way that swinging does not occur.