put a sock in it

The phrase "put a sock in it" is an idiomatic expression that is used to request or demand someone to be quiet or stop talking. It is typically said when someone's speech or noise is irritating, loud, or disruptive. The phrase implies the idea of silencing or muffling the person by suggesting they should put a sock (an item of clothing) into their mouth to prevent them from speaking. It is a figurative way of asking someone to be silent.