cock-and-bull story: Meaning and Definition of

cock'-and-bull' sto"ry

Pronunciation: (kok'un-bool'), [key]
  1. an absurd, improbable story presented as the truth: Don't ask him about his ancestry unless you want to hear a cock-and-bull story.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.