Marriage: a legal union between a man and a woman.
Garriage: a legal union between two
men.
Larriage: a legal union between two women.
Barriage: a legal union between two bisexuals.
Tarriage: a legal union between two transgenders.
Sparriage: a legal union between a
human and another species.
Shamarriage: a legal union of convenience.
Sharriage: a legal union specifically between a man and a sheep.
Swarriage: a legal union specifically between a woman and a
swan.
Turduckenarriage: a legal union between a
turkey, duck and chicken. (Over-rated.)
Haliarrage: a legal union between a
human and E.T. or other alien.
Polyarriage: a legal union between three or more.
What's so magical about the word marriage?
Straight fellow: If I get married I don't want
people asking, "what's his name".
Gay fellow: If I get married, I don't want
someone to ask, "what's *her* name."
You get the idea. Regardless, most mglbtspshamshswturkendenalipolyharriages will
end in one word for which no hair-splitting is required: divorce.