1. We always enjoy listening to Uncle Charlie’s stories. He really knows how to tell good ones—he’s got the gift of gab.
2. I’m not much of a talker. I wasn’t blessed with the gift of gab.

Compare to: talk a blue streak. The expression is used humorously or with admiration. It suggests that being able to speak (gab) is a welcome trait (gift) The word gab is probably an Old English variation of the Scottish word ‘gob,’ which means ‘mouth’ or ‘beak. ’