Answer: cockandbull

AnswerCrossword Clue
COCKANDBULLImprobable
COCKANDBULL... story (a canard).
COCKANDBULLOne kind of story
COCKANDBULLLike a story that can't be believed
COCKANDBULLOne word that precedes "pit," one that follows it
COCKANDBULLAbsurd type of story