What is Shut the Front Door Up?

“Shut the Front Door Up” was a term Charli D’Amelio used in Alex Warrens tiktok featuring her, her friends, and her other sped actions. It is meant to be a replacement for the phrases such as: “Shut the Fuck Up” “Shut Up” or “Shut Yo Bitch Ass Up” all meaning for someone to be quiet.