I can sympathise with the Duke.
For anyone that does take pride in their lawns it does piss you off when some cowboy decides to ride his bike over it.
I had some mail delivered the other month which had to be signed for.....our postie decided to ride his bike across my front lawn then over a garden to get to my front door. Sarcastically I advised him he should have come around to the back door but he said it would take to long . After signing for the registered mail I let him know I wasn't too happy with him riding across my lawn and garden to which he replied for me to put a complaint in to the post office, then he proceeded to leave a tyre mark diagonally across my front lawn which could be seen for a couple of weeks.
We do have a po box so don't receive a lot of mail via our letter box. I did make a complaint to the post office but they weren't too interested.
Thank god I don't get the milk and bread delivered ....