A YouTube star brought new meaning to the saying "don't judge a book by its cover" with a shocking social media experiment in which he dressed like a homeless person to see if restaurant staff would treat him any differently.

In an attempt to prove that appearances can always be deceiving, New York-based Coby Persin tested staff at a Florida eatery to see how they would react to someone based purely on what they looked like, before stunning them with the revelation that they were in fact dealing with a "billionaire".

In a three-minute video, the 23-year-old approaches the restaurant dressed in an assortment of scruffy clothing and carrying a large garbage bag, before asking to be seated by a staff member who is standing at the entrance, the Daily Mail reports.

Coby approaches the man, who appears to be acting as a host, to ask for a table for himself and his friend Ronaldo.

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Ensuring that he remains polite and courteous throughout their conversation, he also asks whether it would be possible to see a menu.

"Hi how are you? I would like to get a table for me and my friend Ronaldo - to see the menu maybe," he says.

But the host, whose face has been blurred out to maintain his privacy, says he is unable to seat Coby because he believes the restaurant is "too expensive" for him.

"I'm sorry. We're not going to be able to do it sir," he says, blocking Coby's access to the eatery. "This place is a little too expensive for you."

Clearly put off by the interaction, Coby decides to give the restaurant host a chance to redeem himself and asks again if there is a menu he can see.

"Nope," the host replies bluntly. "We can't serve you, we're not going to serve you today. I'm sorry about that."

And even when Coby tries to tell him he has a lot of money, the host still refuses to serve him and says: "Can you please get away? Go eat at McDonald's - some other options but not here."

Coby then backs away from the restaurant and is heard uttering "wow" as he dials his driver Ronaldo.

But as he starts dialling, the host asks him to make the call off the restaurant's property.

"Can you please get away," the host asks again. "Stand over there."

But the host is in for quite the surprise because Ronaldo drives up in a Rolls Royce with a suitcase of cash in the trunk.

Ronaldo then hands the suitcase to Coby who shows it to the host.

Coby says: "I told you I had money. What's crazy is the way you judged people just by their appearance. I might buy this spot just I can fire you - you're lucky."

Ronaldo and Coby then go to the "steak spot down the street" leaving the host speechless and ashamed.

This isn't Coby's first social experiment video. One of his most recent ones involved the vlogger planting trees in New York City pot holes.

He came up with the green-thumbed idea after he hit a pot hole and ruined the tire of his car.

He said: "When I was driving around New York City, I hit a pot hole and my tire popped and I had to buy a new one.

"So I was thinking to myself, how as New Yorkers can we avoid these pot holes? Had I seen a plant inside the pot hole, I would have drove around the plant and not hit the pot hole."

He added: "So I'm going around with different-sized plants and putting them in different-sized pot holes so New Yorkers avoid them."