Usually a term used when the person has tried so hard to forget something and someone else (usually a friend) states the obvious in order to jog your memory in case you have (luckily) forgotten such a bad event/memory.

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.