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A Nigga who never switched up on you.
-<someone who hasn't changed since you met them>-
He stay on some real shit homie, that's my day one nigga tho
by A Day 1 Nigga June 20, 2016
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A person who has been completely down to earth and friendly with you since you first met them, they're your nigga since day one.
Kodi and I go way back, we've been friends since first grade. He's my day one nigga!
by Krelgore June 20, 2013
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