Grumpy Cat has long been established as one of our all time favorite memes. Can anything beat a cat with so much sass? And Banksy definitely makes the list of our favorites as well. But that got us thinking... What happens when the world's harshest critic meets the world's most mysterious street artist? Maybe Banksy is the one who will finally turn that cranky feline's frown upside down. From Banksy's unknown identity to his new pieces in New York, Grumpy Cat has something to say about the street artist's residency in the city. Grumpy Cat Responds to Banksy's New York Residency, and it's hilarious.