Big Bang Theory - Barenaked Ladies

Our whole universe was in a hot dense state, 
Then nearly fourteen billion years ago expansion started. Wait... 
The Earth began to cool, 
The autotrophs  began to drool, 
Neanderthals  developed tools, 
We built a wall (we built the pyramids), 
Math, science, history, unraveling the mysteries, 
That all started with the big bang! 

"Since the dawn of man" is really not that long, 
As every galaxy was formed in less time than it takes to sing this song.
A fraction of a second and the elements were made.
The bipeds  stood up straight, 
The dinosaurs  all met their fate, 
They tried to leap but they were late
And they all died (they froze their asses off)
The oceans and pangea 
See ya wouldn't wanna be ya
Set in motion by the same big bang! 

It all started with the big BANG! 

It's expanding ever outward but one day
It will pause and start to go the other way, 
Collapsing ever inward, we won't be here, it wont be heard
Our best and brightest figure that it'll make an even bigger bang! 

Australopithecus  would really have been sick of us
Debating out while here they're catching deer (we're catching viruses)
Religion or astronomy, Descartes  or Deuteronomy 
It all started with the big bang! 

Music and mythology, Einstein  and astrology 
It all started with the big bang! 
It all started with the big BANG