But it comes in handy especially for the older crowd. It isn't used much until Pride comes around. No time to waste asking if someone is a military bottom looking for an Asian who is into aquaphilia
All I've got is the daily toilet clogger (usually the one closest to the wall, usually after lunch) and the person who can't seem to stand close enough to the urinal to keep the floor piss free.
I could see if a person is in there taking a dump and has some type of phobia that the door, if locked, will not unlock when he is ready to exit - so he puts some paper towel in there to make damn sure the latch won't engage and the door will not drift open.
If someone was doing it just to fuck with people...I would think they would pick something a little bit weirder (I know a lot of unobservant people who would never even notice this) and if it was practical...wouldn't one of us have figured it out by now?