when having a conversation on facebook via wall-to-wall that has clearly ended, but you dont want to awkwardly leave the conversation, so you like the last post of the person you were talking to instead of saying goodbye or to avoid a run on conversation

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.