It's headed straight for earth, the impact is for sure
But less you could not care, to this you've grown inure
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A comet or an asteroid? Matter it does not!
When it smacks into the earth, everything will be for naught
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Where's it going to hit? Upon the land or in the sea?
There'll be a 'splosion very big, the "experts" all agree
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But it's just a little rock, only 20 miles wide
Only blow up half the earth, so just go run and hide