Al Yankovic - Amoeba

The amoeba is so small you needa microscope to see one
It hurts the eyes, but I'll concede, I'd rather see then be one
They never sing or laugh or talk or eat fondu or quiche
And if you take one for a walk you need a tiny leash
I know the thing must have a brain although I couldn't tell you where
It sure must be an awful pain to be so unicellular