Grumpy Cat is undoubtedly one our favorite memes, and finally someone decided to make a book featuring the internet's most popular cat. To express our excitement for this month's release of Grumpy Cat: A Grumpy Book, we created and compiled the most hilarious book-themed Grumpy Cat memes. Whether she's hating on another title or affirming the superiority of her own book, we hope you enjoy the 30 Funniest Grumpy Cat Book Memes. Can't get enough of this feline's frown? Make sure to check out her book here, on sale July 23rd.