You might want to sit down for this one.

Milly Shapiro AKA that strange lil’ kid from Hereditary has a message for you.

And it’s… unsettling.

Here it is…

Yep.

That just happened.

You see, during the movie Shapiro’s character, Charlie Graham, makes a weird clucking sound intermittently, while she’s going about her business cutting the heads off dead birds and seeing ghosts and what not.

Some movie-goers have taken to mimicking the clucking sound during the movie, which is a bit of distraction for the rest of the audience.

So Alamo Drafthouse, the clever people behindHereditary, decided to put together a little PSA starring the world’s most unsettling child.

In the video Shapiro stares straight at the camera, deadpan, and says: “I heard people have been clucking during my film”.

“Now we have to add clucking to the list of things people can’t do in theatres,” she continues.

“No talking, texting, or clucking at a Alamo Drafthouse… my family has special ways of dealing with people like you.”

The video ends with Shapiro making the clucking sound.

Hereditaryhas been lauded as one of the best horror movies of all time.

The film follows the Grahams, a family who begin to unravel after their grandmother, Ellen, dies.