Thank you jhawk1729 for making this gif.
Stashed in: Game of Thrones!, Best of GoT
Source is the purple wedding -- season 4, episode 2:
Is Game of Thrones' Daario Secretly Benjen Stark in Disguise?!
Game of Thrones season 4 episode 1 "Two Swords" gifs and memes
On Writing | Go Into The Story - George R. R. Martin
When you tear out a man's tongue, you are not proving him a liar. ~Tyrion Lannister