This "Keep Off The Grass" warning sign is protecting possibly the tiniest strip of turf in London.
Residents in Elm Walk, Raynes Park, said the sign had become a "thing of great amusement" since the only vehicle big enough to park there is a unicycle.
But Labour-run Merton's highways department takes the issue so seriously it dispatched a two-strong crew to install it.
In other news.
The tiny piece of protected grass can be filed next to what is believed to be the country's shortest yellow line - 18 inches long - in Highbury Crescent, Highbury.
Makes you proud to be British.