A shadow is a second fiddle 
and always feels inferior 
it tries to reach the golden middle 
of things in the interior 
but is condemned to stay outside 
can't mix it with the boys 
can only  come along to ride 
like ragged children's toys. 
A shadow has no real life 
it is a saprophyte 
though if you try to use a knife 
cut loose this parasite 
you'll find that no amount of prying 
can kill this sad reflection 
so now you know, there's no denying 
you add to your collection 
of fans and others who adore 
your talent and your wit 
a shadow sticks for evermore 
it really is a zit 
that needs supply from the outside 
of nutrients to eat 
it lives in layers of your hide 
and draws your body heat 
and when its life comes to an end 
it shrivels up and dies 
a shadow hovers to offend 
and when rebuffed  it cries 
a zit is born with intellect 
a shadow pretty dumb 
the former would be a defect 
the latter is a bum 
who wants a handout from his host 
that's why he never leaves 
and clings to you just like a ghost 
all shadows then are thieves. 
A word of warning to you now 
don't ever shadow-box 
your shadow knows exactly how 
he's agile as a fox 
Then what, you ask is there to do 
to make you shadow-free 
you show him he has no IQ 
and he will leave you be.
Herbert Nehrlich
http://www.poemhunter.com/poem/a-world-of-shadows/