Though Anya Taylor-Joy has become best-known for her horror filmography — her breakout role in 'The Witch' and her upcoming starring role in M. Night Shyamalan's 'Split' chief among them — she has no stomach for it. Here, she shares her biggest fear (revolving doors), the friends she's made with her movie characters, and her first-ever sex scene with a fictionalized Barack Obama on the eve of her 20th birthday.