Dream About Invisible Ink

I am standing at a large grey desk. Like an oversized office cubicle. I write something on the desk "John Wald was here, Let's have some fun" or something to that effect. I hear someone coming and wipe it off. Hours later the desk has dried and the lettering reappears. I wipe it off again, baffled at this disappearing ink that keeps reappearing after I clean it. Our boss is coming in, and the words won't go away. I'm scrubbing and scrubbing frantically trying to undo my mistake, but it's there big and bold for everyone to see. The dream ends there. I don't get any resolution as far as what happened next.