tv outcast
noun. a person who hasn't seen any episodes of a hit television series, who becomes an outcast in social and work situations since they cannot comment and the others do not want to spoil it.
Person 1: Has anyone seen Joseph?
Person 2: He's a tv outcast today since he didn't see the Breaking Bad finale last night.
Person 2: He's a tv outcast today since he didn't see the Breaking Bad finale last night.