Adjective:
Very much like the Rio Grande is on the
border of Texas and Mexico, a man who is described as being Rio Grande is on the border of being gay. Used for
metrosexual or just questionable guys, usually ones into
musicals or that are very stylish.
Girl to friend:"(Insert guy's name) is totally hot and we get along great but he's kind of Rio Grande, I'm not sure if he wants to
take me home or that guy over there."
or
Guy to Friend:"I made a killing
at the J.Crew summer sale and then watched 'Rent' for
like like billionth time yesterday, it was awesome."
Friend:"Dude, you are so Rio Grande."