NativeBoy:

I will not respond to any other parts of your post in respect of the OPs wishes. I will only answer your direct question pertaining to societies where incest is common. Look up the Appalachians in America. Also called Hillbillies.

That's the only 'direct' question you noticed? Bros, you already opened that can of worms, don't cop-out now. Besides, thread is dead, this is mostly my childishness harassing your silliness at the moment. So please, indulge.

As for hillbillies, really? You note how the oyinbo man typically holds them up as the bastion of all that is good and beautiful about the west, yes?