I'm Tired

My back has an ache
And it's half past eight,
My head is on fire
But I can't just retire,
I'll be damned I'm tired.

My feet reek
And I need to brush my teeth,
I wish the new stock boy would be fired,
The milk in the fridge has expired,
I'll be damned I'm tired.

So now I'm beaten, battered and bruised,
My shoes are very used,
And though I can still reach higher,
I'll be damned I'm tired.