How young are you? Every movie or tv show had a bumbling villain who stutters when they get nervous or so and it's always show in moments of cowardice. Also Porky Pig from looney tunes is the bane of the existance of every stutter and has probably set back the understanding of stuttering to the general public a thousand years at least. Now funny enough Jimmy from south park is a great and realistic portrayal of what real stuttering is like but he also has a physical disability, which to me implies his stuttering is consequence of this too.