Idiom: zip one's lips
— I’m going to resign in two weeks but zip your lips please!
— Don’t worry, I’ll zip my lips.
— You promised to zip your lips about our adoption but now everyone's asking when the baby will arrive. How could you spill the beans!
— I recommend you talk to a psychiatrist about this issue. I doubt anyone will be able to zip their lips if you tell someone.
— I'm tired of having to zip my lips around my mother-in-law. Next time, I'm going to tell her what I really think.
— When we asked for volunteers help clean up after the event, everyone zipped their lips.
— Don't worry, I zipped my lips when the teacher asked if you where at the football game last night.
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