Every time I drink my jaw starts swinging. Why?!

I (19F) have noticed in the past year that every time I drink my jaw starts swinging like I’m on x on k or something. I get so stressed going into club queues that bouncers will think this is because I’m on drugs (I’ve never touched any narcotic apart from weed lol). I’m not sure if this is because of anxiety or something, does anyone have an explanation? I need to sort this out!