Caution: Bathroom in Use

So, I'm minding my own business in the bathroom stall, alone here in the late afternoon around the time the Hope Haven clients, who have mental retardation, come about to do their cleaning.  There was no sign outside the bathroom door and the door isn't propped open, so I think nothing of using the bathroom.  Then I hear someone come in, walk directly to my stall door, and rattle it while peeking through the crack.

"Uuuhhh, SHIT!" I hear next, and a man's steps running away.  I didn't see Mike again that afternoon.  :)