It’s not every day you find yourself up against a self-proclaimed 38th-degree Taekwondo black belt, but that’s exactly the situation the bemused shop worker in this video has to deal with.

The so-called Karate master has clearly already been up to no good beforehand, as when the footage begins the store worker is already standing by the exit of the family-run supermarket, attempting to convince the man that it’s time to leave.

For reasons best known to himself, the barefooted TKD dude has decided to make a stand though and refuses to vacate the premises.

Instead, he launches into a foul-mouthed rant, despite there being women and children nearby kids nearby, and occasionally gets into a fighting stance like he’s ready to go toe-to-toe with the increasingly exasperated shop assistant.

Then comes the revelation about his alleged mastery of martial arts.

I’ll break your motherf****ng neck! I’m a paramedic…and a 38-degree black belt in Taekwondo! the man yells, before grabbing some items off the counter and marching out the store.

The worker shows self-restraint by avoiding a physical confrontation at this point, even after the troublemaker throws out a punch close to his face, instead of telling the man that he’s going to call the police as he closes the door behind him.

Unfortunately, the loudmouth isn’t finished yet and he suddenly stomps back into the store, continues yelling and then hurls a breadstick at the worker.

That’s the final straw for the storekeeper, and he charges at the thug, roughly shoving him out the store.

He might not know Taekwondo like the other guy claims to, but he appears to have a black belt in whooping ass and he puts it to good use, dropping the loudmouth to the sidewalk outside and then unleashing a ground and pound assault that KO’s him.

For the record, as you’re no doubt all well aware, there is no such thing as a 38th degree black belt in Taekwondo.

In general, the highest rank that could be awarded is 10th Dan, though 9th Dan would normally be the uppermost rank for someone that’s still alive.