Untitled Insanity

My mind is an empty space,
It's filled with nothing much.
Maybe the mothballs are havin a race,
But the winner got locked in a hutch.
The monkeys inhabit my kneebone,
They swing off arteries and veins.
In my left lung is a caterpillar, living all alone,
And in my right there's a cloud that never rains.
Living in my spleen in an itty bitty fish,
It swins in little circles; round and round and round,
Then is cooked and placed on a dish
And the bones left on the ground.