Urf the Nami-tee joke graphical bug

Since the last patch I've noticed that one of the Manatees summoned by the Nami-tee skin doing her joke has a shark fin. At first I thought that was part of the joke because she normally summons sharks. However on closer inspection I believe that what's really happening is that the shark is also appearing and the two models are being spliced together to create some sort of.... sharkatee.