I've actually heard this conversation in real life. I used to live in Southern Maryland. I worked in Saint Mary's County, which is the southernmost in Maryland, and somewhat geographically isolated with no routes really going through there. At some point, three families settled in the area and intermarried, and continued to intermarry, on and on ad nauseum, for at least six generations. They have a very good special disabilities program in their school system because the inbreeding has resulted in a lot genetic problems as well as generally being pretty low in intelligence. They were told to stop, but they keep on doing it, hence the term Southern Maryland Inbred or SMIB for short. Anyway....There I was...
Southern Maryland Chick 1 (SMC1) - A woman in her mid-twenties who constantly complains about the lack of anyone to date.
Southern Maryland Chick 2 (SMC2) - Also, in her mid-twenties, one kid, lives with mom, kid's dad is one of her cousins but he pretty much only shows up to get laid.
SMC1: (to SMC2 over the cubicle wall) Hey, you'll never guess I met somebody this weekend!
SMC2: Really? Where did you meet him!
SMC1: We had a family reunion, and I met him there!
SMC2: Really? Tell me all about it!
SMC1: Well, he looks just like me! (I would later learn that this is, in fact, true. He looked like a male version of her.)
SMC2: What is his name?
SMC1: (I don't remember his name)
SMC2: Oh, Well where does he live?
SMC1: He lives with his ma, just west if Leonardtown. (About ten miles, give or take from her and her mom.)
SMC2: Really, are ya'll planning to go on a date?
SMC1: I don't know, how close can cousins be and still be okay.
SMC2: As long as he isn't your first, it should be okay.
SMC1 and 2: Giggles.
Me: How about not related?
SMC2: What? What do you mean?
Me: I mean go fill up your car, drive away from here till you only have 1/4 tank of gas left and try to meet some people you aren't related to? (Completely unnecessary as PAX has expanded, but all of those people are outsiders to the SMIBs.)
Me: Furthermore, genetecists have tested you and told you to stop inbreeding.
SMC1: Well this is our culture.
SMC2: The damage is already done, why does it matter now?
Me: *facepalm*
One of many enlightening moments I had with those two near me.