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.