If you enjoy videos of people losing their temper in public, this is right up your alley. This man is dissatisfied with the service he received, so he starts to take it out on the receptionist.
He says everything from "I'm going to sue you and make sure my insurance company doesn't do business with you" to "I'm going to write mean messages on Twitter." He's very thorough about his angry tirade.
Bonus: he messes up his door slam at the end.
WARNING: This video contains hostile behavior and profane language.