Lyric discussion by Boonechic_21 

It describes an unexpected change from good luck into bad luck. As an opposite of the good luck which represents a four leaf clover, a no leaf clover stands for having bad luck.

The song was written about Frank Garrett who was diagnosed with HIV in 1987, Unforgiven was also written about him.

I'm fairly certain all three Unforgiven songs were written dealing with James' alcohol abuse problems. At least, if I remember Some Kinda Monster correctly..

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