There's an old joke that goes something like this: Q: What's the (insert favorite backwards hick state here) definition of foreplay? A: "Hey, Sis...you awake?".
It seems that may not be too much of a stretch in some quarters. The First Post today has an article about the muzzling of British MP Ann Cryer, who called for a debate on the genetic risks of first cousin marriages. It's not that her critics actually favor such marriages, it's just that they're afraid of offending the practitioners of the vast majority of this inbreeding -- Pakistani Muslims.
The advocates of this practice claim that it results in lower divorce rates and "strong family support networks". I'll bet it does...if your first cousin/wife starts getting too westernized, you can count on your "family support network" to kill her to defend your family's honor.