Had a neighbor 20+ years ago who did just that.......he actually called the cops because I was mowing ‘his’ grass. The property lines were obscure & hadn’t been surveyed in decades to boot. The cops laughed.
So - the neighbor hired a surveyor and made sure the new boundary markers were in plain sight for the world to see.
Said neighbor would sit in his truck across the road aligned with the property line while I was mowing to ensure not one blade of his grass was destroyed.......sicko.
He had way too much free time. You should have reported him for luring at your backside. That would have sent him scurrying inside. Fences make for good neighbors.
We have some pasture land where a part of the fence line was bowed a couple of feet over onto the neighbor’s land. It’s been our two families for generations and no one cared because it’s pasture and they’ve rented our side off and on so no big deal. Both families shared fence repair costs through the years but the bow was never corrected and no one could remember why it was there. It just was. A few years ago, the neighbors’ great grandkids inherited the property and the first thing they did was get new survey lines (the old line was dead on) and hire a crew with big expensive machinery to put in a new fence and fix the bow. Hey, fine, we get the use of a new fence and aren’t out a dime.