A knife stored near the toilet to chop giant concrete turds that would otherwise clog the toilet. Poop knives should be dull (since an accidental skin laceration would result in infection) and long-handled. Poop knives should never be used during the bowel movement.

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.

An idea, tool or tradition that was originally thought to be ubiquitous, then discovered to be unique to one's own social group (usually a family), then finally revealed to be far less unique than one thought, though still rare enough that an average person will likely not know about it.

The literal poop knife (a knife used for separating large turds into smaller pieces, such that they fit down the toilet) is the best example.

a knife that is usually used for cutting up big fat turds stuck in the toliet after someone has been constipated for a long period of time.