Same thing as a shithead or a fucking moron, either fit very well. One who's head is filled with excrement and cannot make intelligent decisions. A Douche, dildo or jack ass.

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.