I agree with Thewretched, although it would be nice if you could get this fool to stop doing this to other people too - especially young girls that might not be up to the confrontational challenge. How involved do you want to get? Call AC, ask what they suggest? I'd be pushing this quite far, being a big meanie myself, lol. I'd also be inclined to carry a bullwhip, since one nice swoosh would likely take care of the threat - but is that legal?