Extended bull markets are the primary attraction of equity investing and play an integral role in generating long-term returns.  However, investors must take heed when psychological excesses turn a garden variety bull market into mania-induced price chasing.  Instead of reaping the customary gains offered up by a typical bull, the risk and reward tradeoffs become exponentially larger when exuberance overpowers prudence.  Recognizing the difference between a bull market and a bubble is critical for building a respectable long-term track record.   There are subjective attributes common to most manic equity markets, and although these signposts are not mechanical or quantitative, taken together they tell a coherent story.