Not a lawn mower but a tractor story
I had a neighbor bring a tractor in for repair.
He towed it with a chain behind an other tractor with him in it but nobody in the the tractor that he was pulling and that tractor had a front end loader on it with a hay fork with sharp tines and the fork was about a foot from the ground.
Now it would have worked had my driveway not been down hill, as it was, the pulled tractor with nobody steering swung from side to side in the ditch on one side to the other the whole way but on the down hill run on my driveway the tractor went freewheeling down hill and overtook(as would be expected by someone with a brain)the pulling tractor and poked one of the fork tine smack dab in one of his rear wheels wrecking the tire in the process and blocking the driveway completely with one tractor stuck in the other.
I asked the idiot what he thought he was doing a stupid thing like that for. And why not phone me and i would've helped him drive it over.
Fella got so mad he walked home and left the mess for me to clean up.
I had to phone him a year later to get him to pick up his repaired tractors otherwise i would sell them to settle the $3000 bill.
He came a week later with another guy, didn't say a thing ,handed me the money and drove away with his tractors.
I hasn't spoke to me since.
Was somehow my fault i guess