Day one nigga
A Nigga who never switched up on you.
-<someone who hasn't changed since you met them>-
-<someone who hasn't changed since you met them>-
He stay on some real shit homie, that's my day one nigga tho
Day One Nigga
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!