public bathrooms and longhaired guys

I'm in a bathroom at work, not one on my usual floor, because 'ours' was being cleaned. I do my thing, and come out of the stall to wash my hands....As I open the stall door, in the over-sink mirror, I can see two people standing at the urinals, one obviously male, the other is less deterministic due to the very long hair.

It's only a momentary blip of did-I-goof-ness, but it's there. Nevermind that any woman who's standing up to pee prolly isn't a hardass on gender specificity.