spin a yarn
Definition from Wiktionary, the free dictionary
to spin a yarn
- (idiomatic) To tell or create a story, especially one which is lengthy or far-fetched.
- 1864, Anthony Trollope, Can You Forgive Her?, ch. 14,
- Now I must tell you a little about myself;—or rather, I am inclined to spin a yarn, and tell you a great deal.