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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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Sep 14 Word of the Day
Micro marriging is when your partner manages your personal day-to-day tasks with you much like a Micro Manager at work.
Wife: “Have you put the sheets out to dry and put the towels on?”
Husband: “Yes. You know I am a grown adult also used to live alone so you do not need to micro marrige me”
by Thomas Maddocks March 16, 2018
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2
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
Get a Green Belt Syndrome mug for your Facebook friend Jovana.