But the same investor who once warned that investors had been lulled into "dreamland" by central banks and their easy monetary policy is now making the media rounds warning that those days are over, and that investors better brace for rough going ahead as interest rates are raised.

He said all that and more in his new book, the aptly titled "I'm Still Standing", his first since his acrimonious split with his wife and subsequent downright cold-spirited spat with a neighbor.

According to Gross, yields are inching closer to the danger zone (although they declined again on Tuesday) thanks to the risk of inflation, which is spurring the Fed to act.

"Stocks and even bonds can thrive with low-to-mild future inflation," the billionaire wrote. "But anything beyond 3% and higher" is market-threatening. "Don't get too excited."

US consumer prices rose 7.5% in January, the fastest pace in nearly four decades, as we reported at the time.

Producer prices continued to climb by record numbers in February, according to official data.

A Bloomberg index tracking a 60-40 portfolio of stocks and bonds has declined 6.7% this year, the worst such year since 2008.

Even more interesting than his market view, Gross offered some new insight into his departure from PIMCO, the California-based firm that he sold to Allianz before eventually quitting in 2014. Why did he leave? According to Gross, he was "fired" after telling one of his superiors from Allianz to "f**k off".

Classic Gross.

He wrote that he was ousted from Pimco, at least in part, because of a confrontation he had with the chief executive officer of parent company Allianz SE. During a meeting to discuss bonuses at the money manager, Gross recalled, he told then-CEO Michael Diekmann to "f--- off."