Siblings should always tease one another, that is pretty much the most basic rule in the siblings' rule book. One of the common ways to tease your younger siblings is by telling them they are actually adopted, and coming up with the most elaborate story for what happened with their actual birth parents, hiding their baby pictures, and sometimes even asking your parents to go along with it. The girl in this Reddit story discovered that her life is not far from being a big adoption prank, except…