Man, you must cease and desist with this chainsaw thing.
For one, they are noisy, smelly and messy. You'll wake the neighbors. Far too much cleanup afterwards.
Use white gloves, approach from behind, and garotte the victim of your choice with some piano wire; swiftly, quietly, and without much fuss. Afterwards you can sip a martini, and bask in the glow...maybe listen to some quiet music, before you leave...
