Slightly off track, but I have to say one of the funnier things regarding this topic happened to me back in 2.1.
I was doing some 8 man content with a new FC and they all wanted to get on mumble. At the time I was playing monk. I jump on, say "Hi guys!"
And the first response is,"Oh shit it's a girl."
Second response, "You are healing right?"
To which I respond, "No. I'm your dps."
I get a couple of laughs and another "oh shit." We finished what we were running but just goes to show you the stereotypes guys assume with female players.