Signs

We walk past them every single day - those odd symbols painted on the pavement. I only looked twice at this one because it looked like a little turtle. Well it did to me, anyway. But what exactly do they mean?

Oh yes, people will tell you they're put there to tell workies where to dig holes, or mundane, practical stuff like that. But what if they're secret messages written by space aliens living among us? Or signposts for hideous beings from the Dungeon Dimensions? The truth is out there...

Sorry. It's been a busy day. And maybe I shouldn't have had that last cup of coffee.