This is what you get when you add a bunch of drunken, naked people to a swimming pool. It's a transposition of the first letters of the words "skinny dipping" and means the same thing, except it adds the connotation of being drunken at the same time.

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.