Whos down in Whoville, and underwater residents of Bikini Bottom, there's news for both of you: McDonald's and Burger King , longtime fast-food rivals, are going head-to-head. Or, to be more accurate, scary red-wigged, face-painted clown head against equally frightening red-bearded crown-wearing head.

On Tuesday, McDonald's introduced The Grinch Meal , and on the same day, Burger King rolled out its SpongeBob SquarePants menu . So if you're sick of Thanksgiving leftovers and want some fast food instead, you can decide if your taste buds resonate with the crabby green Grinch or the always cheerful SpongeBob .

Both are limited-edition offerings, so get to your local McDonald's or Burger King soon if you want to try out the meals.

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