Currently used to describe the most diligent, hard-working, never-see-sunlight students at MIT.
You may substitute a brand-name power tool to get the desired effect, i.e. Sawzall, or just make the sound/hand motion of using a chainsaw.
Stan - "He's dumber than shit and so he uses his VP title to fuck with his employees. He's a powertool, bro..."
Our new metaboss is such a power tool; I hope he keeps climbing the ladder just so we won't have to deal with him for long.