I work in a daycare center. The drains in the kitchen haven't been working, so Roto-Rooter was called. They were given access to the center during the weekend, because obviously we can't have them doing whatever they do while there are children there.
Monday morning rolls around, and a teacher, Kelly, goes into the staff bathroom. And finds...feces smeared all over the toilet seat.
And we know for a fact it wasn't there Friday night, because the director used the bathroom right before leaving, and she was the last one out.