A word that originated from the name of a character on Sesame Street, a snuffaluphagus is someone who can only be seen and interacted with by one other person - like an imaginary friend.
In series one of Scrubs the writers were unsure whether the Janitor was seen by all the characters or whether he was a snuffaluphagus seen only by J.D.
by Helen Jones January 02, 2006