When you are so fiercely aggravated by invites to stupid fucking groups or profiles, you want to follow the simple pattern of blocking someone so you receive no more invites, deleting them so you never have to see them online again and finally, killing them so they cease to burden you with their dirty existence any longer.

Can also relate to spammers on messaging clients.

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.