a likely story
1
a way of saying that one does not believe something because it sounds too unbelievable or exaggerated
The exact origin of the idiom "a likely story" is not precisely documented. It has been in common usage for many years and has been used to express skepticism or doubt about the credibility of a statement or explanation that seems improbable.
- He said he'd met Rihanna.A likely story.
- You're saying you saw a unicorn in the park?A likely story!
- He claims he had no idea about the surprise party, but it's 'a likely story' because he's always so curious.
- She says she forgot her homework at home again.'A likely story,' the teacher thought.
- He swears he didn't eat the last slice of cake, but it's 'a likely story' considering it's his favorite.