Too Butch To Pee
http://radyananda.wordpress.com/2009/06/06/too-butch-to-pee/6/6/09
More than once I've been warned that I was in the women's room, as if I had made a mistake. I suspect my tiny physique and mirthful reaction convinces an accuser of her error, despite my short hair and sensible shoes.
Most women become contrite and apologetic when they realize their mistake. A few times, though, someone has become hostile and condescending, as if there is something wrong with me because I'm not femme enough for her. I keep things light by replying, "The world is amazingly diverse, isn't it?"