Idiom of the day :- Fairy tale

Usage, examples and definition of the Idiom :-

In one sense, a fairy story or fairy tale is a children’s story about goblins, spirits, and other imaginary things. ‘Sybil is telling a fairy story to her little friends.’ In another sense, it’s an inaccurate — even false — account of something. ‘Martin said he’s going to be promoted soon. I suspect he’s telling another of his fairy tales.’