At the Dentist (2021)

Paul Hayward thinks he is walking into the dentist's office for a routine teeth cleaning. Little does he know what he's about to experience and how far he will be pushed. An obnoxious young woman sits across the room, loudly having a very inappropriate cellphone conversation. She pays no attention to her noisy little boy as he runs around trashing the waiting room. Yet somehow through all of this, Mr. Pittman sleeps on a sofa in the middle of the room, snoring like there's no tomorrow. Ultimately, the assault on his senses proves too much. Paul reaches his breaking point and gives the young woman, AND her bratty child, a piece of his mind.