Similarly way back when I was 12 and my brother was 10 or so there was some fucking asshole guy that used to date our neighbour's daughter with his dinky ass truck and he'd be the biggest dicks to both of us everytime we made contact. Like we were playing road hockey one time and he drove up and ran over net on purpose and tried to break our hockey sticks.
So that kinda set us over the line. We went inside grabbed a big empty yogurt container and I took a shit in it, my brother grabbed four nails and we went to his truck. I opened his gas tank and dumped the poo into it and my brother wedged the four nails in either direction into his front tires so either way they would blow up. We then went and watched from my room as he got in his truck both his tires blew up he flipped out and had to get driven home by her parents.
Needless to say we never saw his truck again and he wasn't a dick to us anymore.
That's definitely not a morally bad event for me though, I still have no regrets to this day.