I was changing in the locker room at the Kennett Y yesterday when a guy came striding in. I thought, oh, it's a college kid home on break who doesn't realize this is the ladies' locker room. So I went up to him and said, "Excuse me, sir? This is the ladies' room."
It wasn't a guy. It was a tall, slim woman with close-cropped hair, wearing a gray T-shirt, baggy shorts and high socks, with a tight elastic binder around her chest.
Thank goodness, she didn't seem to mind in the least being mistaken for a man. I apologized immediately, and I'm still mortified. Who knew I'd get a lesson in gender definition in the locker room at the Y?
(And more power to her for dressing whatever way she wants.)