McMahon's publicist didn't directly address the lawsuit, instead asking, "Anybody wanna buy a nice house in The Summit?"
The quote is an allusion to McMahon's hilltop home, which is facing foreclosure. The former pitchman also faces numerous other lawsuits filed on behalf of creditors.
Griffin, the longtime talk-show host who created "Jeopardy" and "Wheel of Fortune," died in 2007.
The lawsuit is seeking repayment of the money, with interest and attorney fees.