Kids will be assholes... Too bad you probably didn't know who was the girl who did it, otherwise you could have made her crawl back on the floors and go fix what she had done opening every door she looked. That would have been a fair punishment

The stalls typically should have the ring with the slot where you can open it back up with a coin or wide screwdriver. I was always tempted to do this when I was younger but noticed it could just be unlocked again from the outside, so I never saw the point.

Unless they have a slide lock, in which case there is no other way of unlocking them other than crawling infantry style underneath. I've had to do that a few times. Thankfully it was only one door.

At least it was the girls bathroom and not the boys!

Don't most places have a safety mechanism on the lock to prevent that..? The slit thing in the bit on the outside so you can unlock it with a pound coin

You know, most of those stall doors have the ability to be unlocked from the outside... It's the shiny metal plate where the handle is, looks like a big screw head. Stick something in the slit and twist.

Tip for next time. You just put a broom handle over the door to the inside and slide the lock open. As a custodian at a high school I have to do that a lot.

That's something we used to do in kindergarten, but the custodians got hooks to unlock them.

That kid must have crawled on the floor to other stalls too, so no fear! The floor's cleaner than before she did it, if that is some consolation.

I work in a retail store where this happens all the time. I refuse to crawl on the floor, and we don't have the type of lock with the slit on the outside. I actually just take a broom and use the handle as a lever to slide the lock back. Considerably less disgusting. The only thing with that trick is you do need to have enough head room to maneuver whatever you're using in to place.