Zombies vs. robots

Zombies Vs. Robots :
I rise from the grave when the dead start to walk
And I grab zombie dave and say it's time to rock
Cause we zombies are hungry and we're gonna stalk
The robots are coming our way
We attack in a pack with razor sharp teeth
And we bite and we hack but they don't taste like beef
Oil thirsty zombies won't taste defeat
Because we're forever at war.

Fighting and fighting and fighting we fight.

No one knows why, we'll be fighting until we die.

We come from the year 2135
With our hard metal gear and our lazer beam eyes
Proton packs flowing, zombies won't be knowing
We'll take them undead or alive
We'll blow off their faces and rip off their limbs
At only ten paces, their chance looks real slim
We're programmed to kill zombies
And we don't ask why.