When one reaches orgasm while having anal sex. Anasm can be achieved through the penetration and/or stimulation of the sphincter anii or anus, for both giver and receiver.

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.