Mary's Lamb

Mary had a lamb real small,
That wouldn't leave her side at all,
It disobeyed the teachers rule
And followed her each day to school.

It seemed to have a thirst for words,
Big, fat nouns and juicy verbs,
So it ate up all the books
Then gave the teacher sheepish looks.

It wouldn't even use the bathroom,
Left little messes in the classroom
The teacher strongly disapproved
And had the smelly creature moved.

Now Mary's dad's bought her a horse
And Mary's mom's made fresh mint sauce
And all of Mary's class and clan,
Have all had Mary's small white lamb.

Footnote:

Is it true the lamb so small
Just wouldn't fill her classmates all?
Was hungry Mary heard to say,
She can't ride horses anyway
And didn't really want a horse
But rather have a second course?
And is it just a wicked fable
That now she's got an empty stable?