In the fall of 2010, Jon Watts and his friends from college decided to make a fake trailer about a man turning into a clown. They decided to make it look as realistic and serious as possible to fool people into thinking it was a real movie. They posted it on YouTube and were shocked when the video went viral.

The premise of the fake trailer for Clown is that a father puts on a clown suit and makeup for his son's birthday party when the clown he hired doesn't show up. Afterwards, the father discovers, to his horror, that the makeup doesn't come off. Watch the fake trailer below.

Watts and his friends included fake credits in their fake trailer, notably one that claimed it was directed by Eli Roth. To their astonishment, Roth saw the trailer and contacted them, describing it as "a cool idea" and inviting them to pitch a proposal for a full-length feature. The young men quickly got something together that Roth liked. Roth found financing and the film began production in November 2012.

While the completed film awaited distribution, Watts moved on to his next project, Cop Car, which debuted to wide acclaim at the Sundance Film Festival in January 2015. Largely on the strength of that independent thriller, Watts was hired to direct Spider-Man: Homecoming, which will hit theaters on July 7, 2017.

Now Clown will finally be released in the U.S. Watch the scary new trailer below.

Look for the movie in theaters on June 17.