Watch Slow Children

There are many possible interpretations of ordinary signs.
These show how important it is to pay attention to grammar.
For instance, "Falling Rocks": of what use is this information?
Or "Watch Slow Children": I imagine this sign followed by one that says "Admittance: $2"
Or "No Vehicles in Park": Do they mean there are no vehicles in the park? Or do not put your vehicle in PARK?
On an visual note, here is some funny pictorial signage.
Also see: http://www.dumb-signs.com/