Wiktionary
cock-and-bull story
n. (context idiomatic English) A far-fetched and fanciful story or tale of highly dubious validity
WordNet
cock-and-bull story
n. an interesting but highly implausible story; often told as an excuse [syn: fairytale, fairy tale, fairy story, song and dance]
Usage examples of "cock-and-bull story".
Templar, if this is some cock-and-bull story that you've concocted to try and stampede me, let me tell you"f80"You don't have to," said the Saint quietly.