King of Queens, The - Blue Snow Cone
Just after the opening credits, you see Doug making a blue snow cone in the kitchen. Then Arthur comes in and says he needs to see him privately. As soon as he's in the living room, his blue snow cone disappears! He's still holding the cone, but now it's empty. There's no way he could have finished that whole thing in a split second!
Season 4, Episode 16 - No Orleans