The idiom "zip one's lip" means to keep quiet or to stop talking. It is often used as a way of telling someone to be quiet or to not reveal information that should be kept secret.
For example, if someone is about to share a secret that they shouldn't, you might say "zip your lip" to remind them to keep quiet. Or if someone is talking too much and not letting others speak, you might say "zip your lip" to encourage them to stop talking and listen.
The phrase "zip one's lip" is a slang expression that is commonly used in informal situations. It is a playful and lighthearted way of telling someone to be quiet, and it can be used in a variety of contexts.
• I had to zip my lip when my friend's boyfriend walked in wearing a ridiculous outfit.
• The politician knew he had to zip his lip when the reporter asked him about his controversial past.
• After years of being in the public eye, the celebrity learned to zip her lip and keep her personal life private.
• I knew I had to zip my lip when my boss started talking about her political views.
• It's better to zip your lip if you don't have anything nice to say.
• If you want to keep your job, sometimes it's best to zip your lip during office meetings.