The state of being exceedingly wealthy to the point where one forgoes usual attire for pajamas.

The phrase is attributable to the Sports Guy, Bill Simmons, as he included it in an article on ESPN.com, though it is often incorrectly traced to Kanye West, who popularized the term.
Jack Nicholson came to the Lakers game in his pajamas and nobody cared, but only because he's pajama rich.
by brattison January 7, 2011
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