WTF? Why would somebody think that they can mow the lawn in front of my house without asking me if I minded?
It’s not like it needed it that badly, I do cut the stuff every other weekend (it hasn’t quite woken up yet from it’s winter dormancy). Granted, I don’t over-fertilize it to the point where it is unearthly green like the neighbor does, but it’s still not a bad lawn.
If he didn’t cut it shorter than I wanted it, I probably wouldn’t say anything. But how the fuck are you supposed to politely say “Could you please never mow my lawn again?”