Shut your mouth is an English phrase used to tell someone to stop talking, and spoken versions of it circulate as reaction clips on soundboards, in memes and in short-form videos. The appeal is practical rather than tied to one famous scene: the words are understood and the clip fits over a facepalm, a pause or a cutaway. Creators also use close variants such as shut you mouth and shut yo mouth, which keep the same meaning with a different delivery. That flexibility keeps it in use, since almost any overlong explanation can be answered with the same instant dismissal.