Donny boi

1. An old man who thinks he's grandmaster ninja of the Bujinkan but is laughed at by MMA and genbukan alike. He supports the KKK. Rumored pedophile by martial arts legend Frank Dux.
2. Any idiot, especially a martial artist, that mistakenly thinks they're legendary.
"Don't be a Donny boi."
by trueninja528 March 13, 2019
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