This morning at work, I came across a crudely-written sign on the men's room that said, "Restroom OK to Use." I suspect that this is an incomplete description of the situation. Here are some ways the sign may have been intended.
Despite the presence of alligators in the stalls, Restroom OK to Use.
Ignore the pyramid of human skulls. Restroom OK to Use.
Please stop relieving yourselves in your office trashcans. Restroom OK to Use.
Restroom OK to Use. Rat population now mostly under control.
If you have any suggestions, feel free to leave them in the comments.