Flint knapping is when two guys put pieces of flint rock between their buttcheeks and moon land each other. The friction generates a spark which tickles their anus hole and gives the Flint knappers extreme pleasure.

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.