a friend of mara
A friend of Mara is a gay person who hides in plain sight. It's a fancy way of saying you're a dyke and you're not afraid to say it.
At the gym, my friend said, "Are you a friend of Mara?" I said, "No, I'm a friend of the treadmill." She said, "That's just a fag disguise."
My coworker asked me, "You're a friend of Mara, right?" I said, "No, I'm a friend of coffee." He said, "That's just a lie."
My friend said, "You're a friend of Mara, aren't you?" I said, "No, I'm a friend of the weekend." She said, "That's just a fag excuse."