ID: Picture Of A Black Hardcover Book With A Red Bill Cipher From Gravity Falls Outline. The Title Under Reads 'the Book Of Bill' - Tumblr Posts

guess who :3 bill posts this is fun not just ONE MIND but like uhhh counting hold up LIKE 10 MINDS endo safe pluralgang harper coming in to ID ID: Picture of a black hardcover book with a red Bill Cipher from gravity falls outline. the title under reads 'the Book of Bill'