a. That friend who somehow always ends up leaning on your life, crashing on your couch, and gives you nothing in return, i.e. when you're all watching TV, the couch thief asks you to get a soda for them, and when you return they've stolen your seat.

Anatidaephobia is defined as a pervasive, irrational fear that one is being watched by a duck. The anatidaephobic individual fears that no matter where they are or what they are doing, a duck watches.

Anatidaephobia is derived from the Greek word "anatidae", meaning ducks, geese or swans and "phobos" meaning fear.