Harry Potter is a just fantasy story. Those terrifying, soul-sucking Dementors aren’t real.

Or are they?

Yousef of prank channel Fousey TUBE hit the streets of downtown with a hidden camera crew and his buddy dressed as a Dementor.

When the time was just right, the monster struck Yousef and knocked him out in front of a terrified witness.

The witnesses didn’t know how to react. Hilarious!