No, it isn't created out of thin air by the government. That's silly. It's printed on this special paper by the US Mint.

Did you have trouble in school? Was your bus smaller than everyone else's was?

Is this why you still live at mom's?
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She was standin' alone over by the juke box, like she'd something to sell.
I said "baby, what's the goin' price?" She told me to go to hell.

Bon Scott - Shot Down in Flames