cousincesty

adj. Boom chicka chicka wah wah, chicka chicka ooh la la, chicka holy shitballs! That’s my gene pool.

Real citation: “Sugaru's thoughts on Tohma and himself and how they stand next to each other. Can be taken as slightly cousincesty.”
(Feb. 20, 2005, http://www.fanfiction.net/u/638277/Sonata_Night)

Made-up citation: “George Michael and Maeby: The cutest cousincesty couple of this era, far more adorable than the unmentionable exploits that offend the heavens under my own family tree.”