This might work with normal people, but probably would not work with nutcases. Case in point...when I told the individual breaking into my home that I had called the police, he suggested performing an unnatural act on them. When I told him that I had a rifle and would shoot him if he broke into my home, he suggested performing a physically impossible act on my firearm. Better come up with another option, since loudly announcing, "THE POLICE ARE COMING!!!" will probably just persuade would be interveners to stay out of the conflict.