The gap at the top of a girls legs. You can use the Cunt Gap Index, or CGI to measure this and it is in finger widths ranging from 0 where you couldnt fit anything in to 4 where an upturned palm could fit between the legs therefore really displaying an impressive windy gap

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.