Earthworm - I am humankind's friend.
Tickle me in my middle half,
Listen for sounds - that's my head end.
And at humans I often laugh.
A great sense of humus have I.
Tequila bottles - I crawl clear.
Could be the death of me - tiz why.
Lots of in-dig-gestion. Oh dear!
Busy fertilizing the ground,
I get so wrapped up out and in.
I catch my other end around.
Oh where in earth have I not been!

Earthworms - we're ever confirming
All the good of global worming.

Ima Ryma

http://www.poemhunter.com/poem/earthworm-6/