Last week I was working late and went to the soda dispenser near midnight. When the can dropped into the tray with a loud bang, it was followed within seconds by the sound of someone in high heels going to the main exit and leaving the building in a hurry.
I didn't get to see who it was, and possibly it was one of the few female colleagues I have. Still the image of some unknown colleague crossdressing and bolting for the door made me smile. I never saw who it was.
(it's in a secluded spot that needs to be dark because of what we do, so it's a very good place for a bit of inconspicuous crossdressing if you think the building is empty and the guards and cleaners have done their round. - speaking from experience)