a nigbro is a black version of a white bro, which usually holds the same or similar definition as a flatbiller, 909'er or brah.
a nigbro does not have to be from the 909, but a nigbro does infact, HAVE to be from southern california, and black. Catch them sportin the latest and greatest tillys gear. Famous, Tapout, Volcom, Split or any other trendy white brands. Dickies shorts/pants are a must. If not dickies, they must have cargo pockets. House slippers are beginning to be very popular in the bro family. Bleached hair and big afros under a tight fitting flatbilled hat is very original. They usually carry bandanas. Gangsters please be advised, these are not flags even if worn on the left side "yeah thats the crip side." Please, if you see a nigbro do not bust a cap in their asses, instead great them with dap.
A nigbro is also considered, an inside out wigger
They like mayonaise, and get sunburnt.
"whos that black dude in the Etnies sweater?"
"Oh, thats my nigbro Nick, I met him in zero period surf class at bolsa, he's cool people."
a term used to greet/refer to a friend. used in same context as nigga or bro.