in the mouth
see down in the dumps (mouth); look a gift horse in the mouth.
What Does 🤐 Zipper-mouth Face Emoji Mean?The zipper-mouth face emoji depicts a face and two eyes, with the mouth appearing as a silver zipper, complete with a dangling zipper pull.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.