Sling Blade is a 1996 American drama film set in rural Arkansas, written and directed by Billy Bob Thornton, who also stars in the lead role. It tells the story of a man named Karl Childers with a developmental disability who is released from a psychiatric hospital, where he has lived since killing his mother and her lover when he was 12 years old, and the friendship he develops with a young boy. In addition to Thornton, it stars Dwight Yoakam, J. T. Walsh, John Ritter, Lucas Black, Natalie Canerday, James Hampton, and Robert Duvall. Wikipedia
Karl: (on the phone) Yes, ma'am. I've killed Doyle Hargraves with a lawnmower blade. Yes, ma'am, I'm right sure of it. I hit him two good whacks in the head with it. That second one just plum near cut his head in two... It's a lil' ol' white house on the corner of Vine Street and some other street. There's a pick-up truck out front that says "Doyle Hargraves Construction" on it. Doyle said besides sending the police, you might wanna send an ambulance or a "hearst". I'll be sitting here, waiting on ye.