In a dark alley, a deadly assailant tries to do you in at close range!
Well, what the heck am I doing in a dark alley in the first place? Furthermore, how were my powers of observation so clouded that I let some hoodlum get close to me?
I suppose, failing at all of that, I could pull a gun. Of course, I don't know how much that'd help me, since I'd never carry a gun that weighs less than 16 ounces....