I'll let my wife take care of it. She worked in the fed penn in P.A. for 2 1/2 years and the last 15 in the loonie bin. She'll have you spitting your teeth out before you can say "give me your.....".Have to disagree slightly here, if a guy comes at you with a knife or a length of pipe or baseball bat I think you would be wise to accept the fact he is prepared to kill and you should use every bit of force you have.