(Taylor calls them wise characters wearing period wigs and costumes).

If she was a flat-out killer with no character development, I think itd be a comedy.

I went to see it, and as soon as she got killed, people started laughing.

(from left) Haley (McKaley Miller) and Sue Ann (Octavia Spencer) in “Ma,” directed by Tate Taylor. Photo Credit: Anna Kooris/Universal Pictures

Anna Kooris/Universal Pictures

That left an indelible mark in my mind….

I kept saying, Cut!

It doesnt look like youre sewing!

Ma

Anna Kooris/Universal

[And shed joke back] F you!

Still, Spencer had a full-on blast making the film.

It was like, let your hair down and go crazy, she says.

Watch EWsexclusive clipfrom the film above.

A version of this story appears inEntertainment Weeklys summer TV preview issue, on stands now or availablehere.