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A disease common to junior martial artists. After very little experience they think they are the love child of Bruce Lee and Musashi and know everything there is to know about combat arts.

As the old saying goes: a little knowledge is a dangerous thing.
Damn, that kid has read Go Rin no Sho but still has Green Belt Syndrome
by BigScottUK August 01, 2006
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A disease common to junior martial artists. After very little experience they think they are the love child of Bruce Lee and Musashi and know everything there is to know about combat arts.

As the old saying goes: a little knowledge is a dangerous thing.
Damn, that kid has read Go Rin no Sho but still has Green Belt Syndrome
by BigScottUK August 01, 2006
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Get a Green Belt Syndrome mug for your dad Paul.