A Lazy Gun:
A Lazy Gun is roughly half a metre long, 30 cm wide and 20 cm tall. On the front are two short cylinders that end in black lenses. A sight extends from the main body, as do two hand grips. A metallic strap allows the Lazy Gun to be fired from the waist. On one hand grip is a zoom control and on the other grip is a trigger mechanism. The Lazy gun is massy but light, and weighs three times as much when turned upside down. The Lazy Gun is the only weapon known to display a sense of humour.
To fire the Lazy Gun, it is pointed at the target, zoomed in, and then the trigger is pulled. What happens next is unpredictable. When fired at humans, many different things may occur. An anchor may appear above the person, giant electrodes may appear on either side of the target and electrocute them or an animal may tear their throat out. Larger targets such as tanks or ships may suffer tidal waves, implosion, explosion, sudden lava flows or just disappear. When fired at cities and other such targets, thermonuclear explosions are the norm, although in one instance a comet crashed into the city.


Easiest? No, in some cases it even seems to go for the more exotic over easiest. The point, thematically, is that it is inevitably destructive: Point and pull the trigger, and it will destroy.
It’s from a very weird sci-fi novel, where the thematic point is that both the weapon and the individual who wields it are intrinsically destructive.