These are the best Grumpy Cat memes, videos and snarky quotes about love, relationships, ... 10. The only Valentine's Day meme for single people you'll ever need. Advertisement ...

Fans of Grumpy Cat, Oscar the Grouch, and Andy Rooney, stand and cheer (or stand and kvetch, if that’s more your style): October 15 is National Grouch Day. Let’s take a moment to celebrate ...

And Grumpy, one of the Seven Dwarfs. You can commiserate with other grouches on Twitter by using the hashtag #NationalGrouchDay. So, enjoy your day -- or, more in character -- be grouchy about it.

And Grumpy, one of the Seven Dwarfs. You can commiserate with other grouches on Twitter by using the hashtag #NationalGrouchDay. So, enjoy your day -- or, more in character -- be grouchy about it.