Social worker

Upon meeting the Sixth Doctor and Peri, Olivia Jennings thought that they were social workers. (AUDIO: The Curious Incident of the Doctor in the Night-Time)

Two skinheads assumed that Lady Peinforte and Richard Maynard were social workers, even after they stripped the skinheads of all their clothes, and tied them upside-down from a tree. (TV: Silver Nemesis)