Even the most primitive tribes know homosexuality isn’t normal. Its not natural; its a perversion invented by people with too much time on their hands...
It might be too difficult for a Harvard educated Community Organizer to understand how a nut and a bolt work or how the two different parts of a trailer hitch function together.
But doesn't take a rocket scientist to understand some basic principles of natural law and grasp the proper way and the wrong way of fitting some things together.