by making fun of someone acting like them. There are no commedies, unless someone is made fun of, or someone acts like an idiot, or both.
Actors who have made a career acting like unintelligent idiots in movies:
Will Ferrell
Chris Farley
Steve Carrell
Ed Helms
David Spade (Joe Dirt)
Chevy Chase
Adam Sandler
Pauly Shore
Bill Murray
Jim Balushi
Steve Martin (The Jerk, and Father of the Bride)
John Candy
Actors who have made careers making fun of idiots:
Ken Jeong
David Spade (Tommy Boy, Blacksheep)
Bill Cosby
Bill Murray
Steve Martin (Planes, Trains, and Automobiles)
Dan Aykroyd