Bee-Dubya, you need another such license for women.

Simple! Just change the last line from "And you can screw when'ere you like, even if you are both men" to "And you can screw when'ere you like, even if you're both women."

And, Little Hawk, most of us are well aware that marriage isn't just about sex. But exaggeration about marital sex is a widely used humorous conceit. If jokedom had to depend on the true reality of marriage for its fodder, there'd be no marital jokes at all, would there?