In this episode, a latex Scooby-Doo mask is featured. The Ape Man puts it on to play the old mirror gag with Scooby. You'll notice that the neck on the mask covers down to the shoulders. However in the final scene with Shaggy wearing the mask, the neck is much shorter. Not only that, but after Shaggy peels off the Scooby mask, the collar VANISHES BEFORE YOUR EYES!