I'm firing my immune system
It fails at its job
Turns up late
Then has the audacity to be a slob

Last week a virus attacked
And my achy bones
Let me know that
Its defences were slack

Couldn't dodge the cold
Or dribble around the infection
It jumped right into the cough
And stood by as it got invaded

I was going to take it on holiday
But the parasites await
So I'm on the lookout
For a new immune system

At least a boost
Or maybe an upgrade
To protect and prevent
I need a new guard

Whilst I'm at it
I'll look for a new heart
This one causes havoc
And mocks my brain

Does as it pleases
Brings pain
As it pines
For what it can't gain

Maybe they just need to be trained