Recent research has revealed that richer people sleep longer than poor ones. Thus the corolary...

"Oh Jeez, but I'm tired," said Rip.
"I think I'll lie down for a kip.
But first bank my wages,
I've saved up for ages,
And then to the pub for a nip."

He does, says goodbye to his mates,
Goes home, goes to bed and there waits
With interest compounding,
He's balance astounding,
He's wealthier now than Bill Gates.