Somebody hung the restroom sign upside down as a joke, and half the new recruits tried the wrong door.

What does Somebody hung the restroom sign upside down as a joke, and half the new recruits tried the wrong door. mean?

Somebody hung the restroom sign upside down as a joke, and half the new recruits tried the wrong door.

Somebody hung the restroom sign upside down as a joke, and half the new recruits tried the wrong door. in other languages