cock-and-bull story
US /ˌkɑk.ənˈbʊl ˈstɔː.ri/
UK /ˌkɑk.ənˈbʊl ˈstɔː.ri/

1.
荒诞故事, 胡编乱造的故事, 天方夜谭
a story that is obviously not true, especially one told as an excuse
:
•
Don't give me that cock-and-bull story about why you're late.
别给我讲你迟到的那套荒诞故事。
•
His excuse was a complete cock-and-bull story.
他的借口完全是荒诞故事。