Anatidaephobia is the pervasive, irrational fear that, somewhere in the world, a duck is watching you.
The person believes that no matter where they are or what they are doing, a duck is watching them.
The people who suffer from this phobia have suffered some sort of trauma in their lives, likely when he or she was a child.
This trauma probably had to do with a duck or some sort of related water fowl, like a goose. Perhaps the person was attacked by one of these animals.
Some of the symptoms of this phobia include an anxiety or panic attack.
This results in a dry mouth, shortness of breath, muscle tension, hyperventilation, etc. The reality is though, there might be few to no people who suffer from this phobia. It was first named in a Far Side comic strip and was an exercise on how you can make any phobia sound real if you used greek terms for it.