From urbandictionary....
I tired to explain it myself but this official definition really sums it up perfectly
"A common word used to address a homosexual's female friend who he takes around town; he normally calls this companion his "girlfriend" to prove to the world that he is a masculine, football watching, titty grabbing heterosexual male. Although, he may think that this so called 'image' is working, he's actually fooling himself. It's completely obvious to on-lookers that he is a flamboyant homo. Gayer than a chihuahua in pink shades. "
XI Wiki



