Well, this is terrifying! Bill Skarsgård — who plays the clown, Pennywise, in the horror movie adaption of Stephen King's It — appeared on Conan and made his creepy clown face, and we must say, it is equally as scary as it is when he has his clown makeup on.

"It's a funny story because my older brother, Gustaf [Skarsgård], he had this ability to point his lip in a very strange way. For some reason — I don't know how — I understood that I could do it as well," he explained to Conan O'Brien about coming up with the signature smirk. "I would chase my little brother and scare him."

IMDB describes It as "a group of bullied kids band together when a shapeshifting demon, taking the appearance of clown, begins hunting children." It also boasts an impressive cast including the likes of Jaeden Lieberher and Finn Wolfhard. We first feared Pennywise during the original two-part It movie.

Actor Will Poulter was first slated to take on the scary role but wound up pulling out, which director Andy Muschietti explained to Express happened because he "basically expressed a feeling that he had slowly disengaged from playing that character, that was so dark and terrifying. It was a personal decision I respected, but I was eager and willing to find my own Pennywise and that's what we did."

There's definitely something to be scared about, at least according to Wyatt Oleff, who portrays a member of "The Losers Club" in the 2017 flick. He told Entertainment Weekly, “They actually separated Bill and The Losers’ Club to make us not know what he’d look like, so that the first reaction would be really raw. We were definitely scared from that, but seeing him in person for the first time. He’s [6 feet, 4 inches] and looming over you with clown makeup and his getup. It was definitely scary at first until he was really nice and shook our hands and was really cool.”

It is in theaters now.