Okay, that made me laugh.I always manage to leave a bit of blood on a wrench type job. I figure that if you don't donate a bit of blood, you are not serious about it. Wolie, you must be one serious dude!
You can safely check to see if the breaker is off by touching a bare wire with the back of your hand. If the wire is hot the jolt will jerk your hand back away from the wire.I have fun trying to do electrical work without throwing the breaker to 'off'.