Not gay.
Not same-sex.
Not homosexual.
Homogenized.
Just like milk.
Homogeneous Marriage or Homogenized Marriage.
"Traditional" marriage would become "Non-Homogenized Marriage."
Let's see the Religious-Right claim that "homogeneous" is a gay-agenda code-word so they'll boycott milk.
We could re-frame the entire debate in terms of milk and other dairy products.
I suppose if two really skinny gay people marry it would be called a "Low-Fat Homogenized Marriage" and if they practice safe-sex it would be "Pasteurized."
A marriage in which one partner is a closeted gay person would become "fruit-on-the-bottom yogurt."
Two bisexual people of the opposite sex married to one another would be "half-and-half."
I don't mean to offend anyone with this. It wasn't my intention to slaughter any sacred cows.