Wardriving considered harmful (to your health)
I'm currently in jolly old England trying to meet up with a friend for whom I have no mobile number. (This looks like it's not going to happen at this rate, which makes me sad, but is immaterial.) I do have a laptop, but there's no internet access at the place I'm staying, so I did what any dork would do in such a situation: wardrive (or in this case, warwalk). I'd briefly done it the night before this happened at the same location, so I didn't really think much of it, though I should've, because Peterborough is a shithole full of petty crime and assholes like the ones I'm about to describe.

I walk to where I'd found a signal previously (which is on the sidewalk, not on anyone's property), and this time there are some people out front. Most people don't care about when you borrow their internet, but this guy really, really does. "MOVE ALONG, NOW!" So, I move to the next house over. This meathead apparently has nothing better to do, so he walks out from his driveway and over to where I am, asks what I'm doing, and then proceeds to raise an enormous shitfit over how I'm a thief and I should be paying for internet access like everyone else. I explain that I'm 6000 miles from home, have no cash, no mobile, and no mobile number by which to call the person even if I had one. He then calls his neighbor over, who apparently thinks I'm now stealing his internet, who gets even more angry and asks how I'd like it if he walked into my house and started using my laptop. I tell him the situations aren't remotely comparable and add that they haven't bothered to put a password on the AP, which generally is an open invitation to use it (and I add that I do this myself at home). He doesn't care. The conversation pointlessly continues, and eventually he tells me he'll beat the shit out of me if I don't get going and calls me a "fucking twat" (this is how you know it happened in the UK).

I wouldn't care if he'd just told me to get going and left it at that, but turning me over to his moron neighbor who threatened physical violence was a bit much, so right before I leave, someone's router firmware is going to be flashed with garbage.