I thought about scaring the guy too but as a joke. I was gonna make like I had my bow drawn then do a mouth bleat like when you're stopping deer. And as soon as he looked at me I would make like I'm releasing an arrow at the same time make another sound to mimic arrow flight/impact... fffffTHUMP. Then immediately tell him in a joking way that he would've been a dead deer.

But then it crossed my mind that he might not take too kindly to that considering knuckleheads who let 40 rounds fly yet have no squirrel to show for it probably don't have a good sense of humor.