The Walking Deadfans are a very smart, very internet-savvy bunch. And since The Walking Dead is such a resolutely unfunny show, it's up to fans to wring humor out of all the glowering and solemn discussions about what survival means or whatever. So fans use their intelligence and internet savvy to create hilarious memes about the show (see the amazing "Hey Carl" subreddit for evidence).
Sunday night's Season 6 finale gave meme-makers plenty of material to work with. Fans were annoyed with the cliff-hanger, and when fans get annoyed, they get funny.
So without further ado, here are the 10 funniest responses to The Walking Dead finale.