The Fly

There's a fly buzzing round inside my head
And it can't find its way out
Crawling here and there not getting anywhere
I can feel it panicking now
As it follows a bundle of nerve fibres
Down the temporal lobe to my spinal cord
Backs up to the pituitary gland
Flees to the forebrain, turns again...
I can feel each footstep like a punch
My eyes explode with pain
As it makes its way up my optic track
Then pauses and turns again...
It probes my hypotalamus
Blunders round my cranium
From the tectum to the tegmentum
Stretches its wings, then turns again...
Until it reaches the control centre
That tells me that I'm me
It burrows into my synapses
Rests a while and then it starts to feed...