Played by Dave Sheridan, Doofy is the parody character of Dwight "Dewey" Riley from the Scream trilogy. He is also one of the three killers in this movie (the other two are Bobby and Ray). Doofy is short for Doofus, as he suffers from extreme mental retardation and erratic regularity ("I go poopie. It was good"). As Buffy's 25-year-old brother, he still attends "Special Class" at B.A. Corpse High School. Buffy attends the same school, known as "Miss Teen She's-So-Fine", while Doofy himself is a "Special Police Officer" whom nobody takes seriously. He enjoys masturbating with his mom's vacuum cleaner. At the end of the film, in a nod to The Usual Suspects, he is seen changing his look and mannerisms (his retardation having been faked), and getting away in a car with Gail Hailstorm.