Bronigma 

A person that you know but can't explain.

What should the theme be for frankenstein's birthday? I never know what he likes, he's such a Bronigma.

Bronigma by TheRealBeef November 6, 2019

Bronigga 

The combination of the two words "bro" and "nigga", hence "bronigga". Usually only used by mulattoes when a addressing a friend or companion.

(Mixed person) Joe: "Yo, what up my bronigga?"
(Black guy) Jamal: ".....yo?"

Bronigga by Fishie_Fishkins September 2, 2010