How rude. Clean up after yourself.

#8, schools usually have a unisex bathroom for teachers in the main hall. It's rare for anywhere else, but I would imagine a small office would have a unisex bathroom.

Anway, at the dude who took the dump, next time man up. If you did something to the toilet, tell someone or tell the girl. You don't have to say, "I took a dump and if you go in there, you'll be surpised." All you had to do was close the door, and say the toilet isn't working correctly. She would appreciate it, and not only that you didn't make yourself look that bad. There's an old saying that looking like an idiot for 5 seconds is better than looking like an idiot for the rest of your life.