Supernatural

Sam, Dean, Castiel from Supernatural. What would happen if Sam wasn't the youngest? What happens if Mary and John had a third child, you. You've been with Sam and Dean your entire life. They've taught you everything you know, about fake ID's, monsters, hunting, everything about anything. As the years go by and one crazy thing after the other has happened, you've finally caught a week off and how do you three spend it? With Castiel, obviously. Yep, so you guys are in a diner having lunch.