Snails slide down the sidewalk
On a slime carpet after a rain.
As it dries sometimes
They walk out of their shells -
As if their shoes got stuck in mud.
And in the sunshine
A shimmering trail
Follows the slug
Back to the garden loam.
Lillian Susan Thomas
http://www.poemhunter.com/poem/snails-walk-out-of-their-shells-2/