If you ever spend time around ... then turned into into a viral meme, as the similarities between coughing children and this sickly-looking cat were far too accurate. A few people even proved ...

However, her look does not mean she is of a grumpy nature too. Her grumpy look and frown ... of the funniest and most famous Grumpy Cat memes. We bet you’ll feel super grumpy after this!

But soon, Grumpy Cat will make the jump from Internet meme to mainstream as the official spokescat for a Friskies brand cat food, Nestle Purina PetCare announced Tuesday.