The Grinch Source/credit: marmusha What am I looking at? This Grinch illusion is a grumpy cat looking out of the window. His reflection fits nicely onto the Chrismas tree outside, making him look like the Grinch. More optical illusions:Back to SchoolDinosaur BirdDead Man's FingersBending the WallsDelivery carGeometric ShapesSexy BirchOminous bird