What does the slogan in the bathroom "Come in and go in a hurry" mean?

! ! ! ! ! ! ! ! ! ! ! ! ! ! Come because you can't hold it in anymore, so come in a hurry. Come and go because it's convenient for you. It's time to be moral and flush the toilet down, so it's a rush. This is based on the idiom "come in a hurry, go in a hurry". I hope it will be helpful to you... …