Proper procedure is to point at their zipper and say " Your zipper is down " then grab the back of their head as you slam their face to your knee knocking them out cold!
Have I got a route for you!! It's in Charlestown Mass..
I've got three gun stories from my route. One was scarier than the others. I witnessed a pistol whipping. Drove down the street. Called the cops. One month later, the guy who did the whipping, drove by me real slow on Main street. I was on foot. He gestured with his hand to his head, pulling the trigger of an imaginary gun, as our eyes engaged. Didn't give me that warm fuzzy feeling.