You know Grumpy Cat, right?
Well, let me introduce you to Grumpy Cat, the internet sensation who is now, er, a published author - of 'Grumpy Cat: A Grumpy Book'.
On the publicity trail, Grumpy Cat gave a rare interview, to the person most likely to lose it, Karl Stefanovic. Watch:
Here are some fun Grumpy Cat memes for you. For more, click on the Grumpy Cat Facebook page.