Here's a breakdown of the idiom:
* Hold your tongue: This refers to literally holding back your tongue from speaking. It implies that you should refrain from saying anything.
* Button your lip: This suggests physically sealing your mouth shut. It emphasizes the need for absolute silence and prevents any further words from coming out.
Together, these phrases create a forceful image of complete silence.
The idiom can be used in various situations, such as:
* When someone is about to reveal a secret.
* When someone is gossiping or spreading rumors.
* When someone is arguing or being rude.
* When someone is in a situation where they need to be discreet.
Examples:
* "Hold your tongue and button your lip, that's a secret between us!"
* "I know you're angry, but just hold your tongue and button your lip for now."
* "It's best to hold your tongue and button your lip when dealing with sensitive matters."
In short, "hold your tongue and button your lip" means stay silent, keep quiet, and refrain from speaking.