I did this as an illustration for a nursery rhyme/poem I wrote. You read down for the first verse, then flip the image to read the second. I've included both orientations so you don't have to stand on your head (or upend your laptop.)
The poem reads:
The birds fly up,
The birds fly down.
The birds fly underneath the ground.
In layers of silt, beneath our feet,
Their feathers rustle, deep on deep.
John walks up,
John walks down.
John walks to another town.
Dust in his mouth, dust in his shoes,
Birds overhead, in ones and twos.