It's mean to crush children's imaginations.
Rebecca's nephew asks her if Santa Claus is real since some kids made fun of him for believing.
Rebecca wants to answer her nephew's question.
Rebecca tells her nephew that sometimes just believing in something makes it real, so of course Santa Claus is real.
Rebecca tells her nephew that Santa Claus is, in fact, not real.
Rebecca's nephew smiles brightly and gives her a hug.
Rebecca's nephew runs into his bedroom crying and slams the door.