I was visiting my family in AR. I was monitoring the ice-cream makers in the garage while everyone else was inside chatting. My cousin came out and was like, "Hey baby, (eyeballing me) you wanna go behind the barn?" I was like "W T F ???"
Well, I did date my brother in law's sister. We talked about marriage and that was the first time I ever heard the phrase double first cousins. She was referring to my sister's kids and ours when we had some.