Adventures of a Pea Brain

Have you lost your little pea brain?
Yes, yes of course I have.
It went to Oz to find my heart.
Which was lured there by the glittery red shoes.
On her journey, the pea encountered
Three men in a tub who
Hid the brain from the Evil Witch
Under some mattresses where
The princess slept.
She tossed and turned until she found the pea
And took it to town, where she sold it to
Jack and the Old Lady who lived in the Shoe
With a gazillion kids. The economy is bad
And Jack has been out of work. So they
Were very hungry and craved peas.
Jack planted the pea and sat down next to
Mary and found her not at all contrary.
Jack and Mary tended the pea brain
Along with the Silver bells and Cockle shells
(although Jack had not seen those before)
My pea brain grew into a pumpkin-size
Pea where Peter put the Wife and things
He didn't want to keep.

My brain's been busy.
Excuse me while I try to find my heart.