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,
It all started with a big bang!
BANG!
"Since the dawn of man" is really not that long,
As every galaxy was formed in less time,
Sheldon: (knock*knock*knock) Penny!
(knock*knock*knock) Penny!
(knock*knock*knock) Penny!
Penny: (knock*knock*knock) Sheldon!
Pause
Sheldon: That's just wrong.
Magenta banged on her big, gold, metal gong,
Amy: For someone who has a machine that can travel anywhere in time and space, Doctor Who sure does have a thing for Modern-Day London.
Sheldon: Careful, it's that kind of sass that can get a person uninvited to this year's Who Con.