The phrase "fairy tale" refers to a made-up story that often includes magical creatures or events. It is a type of story that typically entertains or teaches a lesson. Full definition
This is an anthology of fairy tales for adults. (goodreads.com)
That sense of justice would be great, unfortunately I am not delusional, I do not have a single digit IQ, I can not believe in fairy tales with a straight face. (religion.blogs.cnn.com)
After all, he spent a large part of his life writing fairy tales for children, didn't he? (firstthings.com)