Jason Bateman is a guy who acts unflappable no matter what weird shit he hears. He might shoot back with a little jab at your idiocy, but it will be couched with such subtlety that you'll never know it. In real life you'd know it. If you were in a movie, you wouldn't know it though. If you were a character in a movie. If you and Jason Bateman were making a documentary, I think you'd know it. A documentary is a different kind of movie where stuff is real.
Jason Bateman is the Patrick Bateman of Batemans. In real life. Patrick Bateman is the Patrick Bateman of fiction.