What IS That?

What is slimy? The spit shed from a loud shout, and the water stuck onto an eel's snout.

What is unpredictable? The next move of a professional chess player and what you'll
find in the mind of a new mayor.

What is Lost? The only soul in a dark abyss, and the lonely star in a total eclipse

What is Impossible? A casual man, walking through a wall and a newborn baby, who is 
unnaturally tall#

What is undone? Your first shoelace and the evolution of the human race

What is this? The end of this poem.