Alan Greenspan coined the phrase "irrational exuberance" during his tenure as Federal Reserve chairman. He used it in a 1996 speech in reference to the excessively high prices of "dot-com" companies. He worried that assets were overvalued. Four years later, the dot-com bubble burst, confirming his concerns. Presently we are observing the last gasps of irrational exuberance in petroleum. Call it "petro-exuberance." This malady became apparent during a session on oil market issues at the World Economic Forum in Davos, Switzerland. Some panelists clearly had a case of irrational exuberance, an overenthusiasm no different from what we saw at the end of the dot-com and the housing crises.