A Holiday Carol

You can blame Tam and Roberta X for this one, since they started on it.

I finished it:

The city's burning in a raging fire,
Zombies chewing at your throats.
AC-130s laying down suppressive fire,
And civilians running like frightened goats.

Swine flu virus floats about like snow,
You'd better load your weapons right.
Tiny 'bots with their eyes all aglow
Will be turned loose to kill tonight.

You know that Santa's gonna slay,
Naughty boys and girls had better pray.
And every mother's child is gonna cry,
As reindeer drop napalm from the sky.

And so I’m offering this simple plea,
To readers from here to Timbuktu.
Clean your guns and be ready to flee,
Happy Christmas, to you!

Update: This is the base song. Not this. Clear, now?