"Busy!"

Why wouldn't a grown man, a professional no less, lock the stall door? It's beyond me.

After two cups of coffee and two cups of water I made a dash for the small bathroom nearest my cube. It has one urinal and one stall. There was someone at the urinal so I opened the door to the stall and saw a man standing there. No more than a glimpse, I closed the door and he called out, "Busy!"

No shit? Lock the door you fool! Here you are a man in your mid forties, well dressed in business clothes and you don't know how to slide a latch on the door. Hey stupid. Close the door!