It would have to be legitimate. If each switches sexes, the state would either recognize them as the other or not. If they recognized them as the other, it would be a man-woman marriage. If they didn't recognize them as the other, it would still be a man-woman marriage. If this hasn't happened, someone will do it for the Guiness Book of Records.
God is love.
Love is blind.
Ray Charles is also blind.
Therefore, Ray Charles is god.
I have a lesbian mother #1, and,
I have a lesbian mother #2.
We all listen to Evanescence, including the pets.
So, why can't we all git hitched?