When three dudes are banging one chick at the same time and their ball sacks are smacking against her chin, her ass and the vagina/taint all in rhythmic harmony. Smack, smack, smack.

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.