Macinton - Macinton is when your jaw goes crazy and makes a sound like

Macinton is when your jaw goes crazy and makes a sound like a door slamming in a haunted house. If you do it too much, your face might fall off.

At lunch, my friend did a macinton so loud the whole cafeteria stopped eating.

I did a macinton while talking to my crush and now I’m forever embarrassed.

My dad did a macinton during a Zoom meeting and everyone laughed for 10 minutes.