Dirty Harry
Permanent link to this comic: http://xkcd.com/692/
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[[Detective "Dirty" Harry Callahan stands near a wall, pointing a revolver at another figure, presumably a suspect, reclined on the ground. A shotgun is on the ground next to the reclined figure.]]
Harry Callahan: I know what you're thinking--"Did he fire six shots or only five?" In all this excitement, I--
Suspect: Six. Definitely six.
Harry Callahan: Shit.
Dirty Harry Meets Rain Man
{{Title text: Sci-fi has energy weapons because otherwise the people like me who watch it get distracted counting shots.}}