The Catholic church has some qualms and made Rudy Goolyiannie annul one of his marrages his first one I believe because they were first cousins. It was quite common 50 to 75 years ago many of you are product of such unions.
Now, if identical twins were to marry identical twins..... Their children would be first cousins under the law but in biological terms their children would be brothers and sisters and yes, it does happen.
Which brings up a different definition of relative humidity. That's the sweat that runs of your nuts when your having sex with your cousin.
