It's easy to imagine the scenario that Samuel Schwarz had in mind while designing the Vest Machine Gun. A hold-up artist pulls out his gun and tells Schwarz to "Stick 'em up!" to which Schwarz would reply, "You asked for it, buddy," raising his arms and activating the eight-barreled machine gun hidden in his chest. But wait, eight goddamn machine gun barrels? We're all for booby trapping your clothes with deadly weapons, but that seems like a lot of machine guns with which to shoot someone at point-blank range. That starts to feel less like ironic justice, more like the type of guy who goes around asking nerds if they want a "Hurts, don't it?" (if that bully then disintegrated their torso like a human landmine).
"Ask me to raise the roof. I dare you."
You'd think they'd be a little more careful with a gun that was so easy to fire while yawning, or high-fiving someone, or signaling a touchdown, or putting your hands in the air so as to wave them around like you just don't care OH MY GOD, EVERYONE AT THE DISCO IS DEAD.