Just when you thought it was safe to eat your lunch, a Tyrannosaurus Rex busts into the break room -- hilariously, I might add.

Jack Lewis, a scaffolder in the U.K., entertained his buddies while on break by busting out a spot-on impression of the king of the dinosaurs. Not only does he nail the movements of the beast, he lets out a howl that is sure to make you chuckle.

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