I taught personnel protection for decades females are the hardest to convince.
That’s why they need to be in charge of such things, right?
A handful of times now I have tried an immediate lesson on young ladies coming out of Walmart. Faces and eyes glued to their screen. About 10 feet away I look over there heads at the sky, fake a ducking action and semi-shout “look out!” While raising an arm over my head. The momentary look of panic is priceless. Usually followed by a “what a Clymer” look of pure hatred from them as I Saunders off cackling like a madman.