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Hall plays Jones as a wizened but exhausted old-timer, cranky about the changing times, while Reece’s Brux is defensive about his success and hilariously awkward in his need for validation from an icon.

And while Brux resembles Garth Brooks — and at one point slips into a reverie where he imagines himself as a rock star, similar to Brooks’ alter-ego Chris Gaines — he isn’t real.

Reece plays a slack-jawed country singer, Troyal Brux, pronounced Brooks: a fictional megastar based on a genuine one.

“It’s not abnormal to brux,” said Frank Lobbezoo, a bruxism researcher and professor and chair of the Academic Center for Dentistry Amsterdam in the Netherlands.

If you are a light or poor sleeper, you spend more time in non-REM sleep, which is when people naturally brux.