Biggest blow-up I've had from a neighbour was when I was sanding my floors (had to have the machine back 8AM Sunday), and he blew up at 5PM Saturday over the noise...picked his car up from the hospital a few weeks ago, better half takes him his mail etc...entirely no hard feelings...he had a bad day, I had a deadline.
Biggest blowup I had with a neighbour. My dog was on heat, inside my house...his dog was on my doorstep barking at 2AM. I hunted it off, it came back. I picked it up, got in his face and handed his dog back to him. Him "your dog's in heat", me "your dog's out of your yard"...I would have won legally, and could have called the pound but they don't work weekends.
I live next door to the old bloke with nothing to do, and all day and night to do it, and a bloke who works 12 hour shifts, days for three, a couple off, nights for three, a couple off.
We don't seem to get in each other's faces any more.