We’re All Mad HereWhile the Cheshire Cat is quite a mischievous character, his grin can be a little unnerving. It’s especially weird when he disappears and only his smile is left. If you find this character amusing, you might like this Cheshire Cat heat reactive mug. It always displays his grinning teeth, and when you fill the mug with hot liquid, the rest of him appears. This officially licensed drinkware would make a great gift for any Alice in Wonderland fan!