Syrio Forel: What do we say to the God of Death ? Arya Stark: Not Today Game of Thrones - The Pointy End
“It came to the middle of the road, seeming almost to paddle from side to side. It remained on all fours for a moment, and then, with a soft grunt, rose to a stand on its rear legs. When it did, Trisha saw it was not a black bear at all. She had been right the first time. It looked a little like a bear, but it was the God of the Lost, and it had come for her.” The Girl Who Loved Tom Gordon | Stephen King
And Trisha did say “Not today” to the God of the Lost. I haven’t read the books of A Song of Ice and Fire yet but I did saw the series so I’m basing this on the TV series.
Twinners are people in parallel universes who are doppelgängers to one another. Stephen King Wikia
My father is Hand of the King. I am not a boy, I am Arya Stark of Winterfell. And if you lay a hand on me my father will have both of your heads on spikes. Now, are you going to let me by, or do I have to smack you on the ear to help you with your hearing?