Accidentally hitting alt and tab, changing the program you are currently in. This is most irritating when you are playing an online game that takes up the entire screen.

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.

In Ragnarok Online and other games, the art of looking at other websites while playing at the same time using alt and tab. Warning: Do not do this in the middle of battle, else your team mates will eat you alive.