The lyrics from that song were apparently written by a 6-year-old.
"Go out to the parking lot
And you get in your car and you drive real far
And you drive all night and then you see a light
And it comes right down and lands on the ground
And out comes a man from Mars
And you try to run but he's got a gun
And he shoots you dead and he eats your head
And then you're in the man from Mars
You go out at night, eatin' cars
You eat Cadillacs, Lincolns too
Mercuries and Subarus..."