Means your wife is cheating on you.

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.

Also Cornudo in some parts of the Spanish speaking world. It means cuckold. Cachuda for women (cuckqueans)