talk your head off
talk (one's) head off
To talk endlessly and exhaustingly. I love my Aunt Lily, but she talks her head off whenever I go to visit her. Sorry, I've been talking my head off about my research. I hope I'm not boring you!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
talk your ˈhead off(informal) talk a lot: He talked his head off all evening.
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