Have you seen this cup?

I was actually surprised to find the sink nearly clear of refuse this morning. Sure, the dish soap, the sponge and the scrub brush were all deposited in the grimy basin, but no dishes. There was, however, another development. 

A fellow coworker, who usually keeps his drinking utensil at his desk and washes it by hand whenever it is needed, reported to me that his cup had gone missing. This person had of course dared to put this cup in the dishwasher. 

Said coworker, then removed the cup from the dishwasher and it was covered with some slimy black material. I mean, I was not there for that but what the hell? Anyway, this Coworker, who I will refer too now as Pat (you cant tell if its a man or a lady) then put the cup back in the dishwasher a second time. This is when it went missing.

It was sighted on the top shelf of the cabinet sometime over the weekend. No pictures are available, but there is an artist's rendering here:

I am not filled with that much vitriol today, but I will point out that when you leave your dishes in the washer and do not claim them, its tantamount to leaving a sack of kittens in a lion den. That said, a rudimentary scan of the office has yielded no evidence, but I am pretty sure the cup will turn up sooner or later... it will probably end up in the sink covered in shit.