Niggtastrophy 

Any tragic or catastrophic event involving two or more niggas. Not niggas as general term for black people. I mean niggas as in ignorant mutha fukas. Anybody can be an ignorant mutha fuka.

Bob: Two niggas drowned in the pool the other day. Not because they couldn't swim, but because they were trying to see who could hold their breath under water the longest. And both of them refused to lose.

Sam: Dam....... what a niggtastrophy.

Niggtastrophy by Juandino June 13, 2010

Niggatastrophe

Incident involving large group of African Americans typically in a causing a catastrophic damage to their own
neighborhood in a form of rioting

Niggas riot over the George Zimmerman case buy looting and shit in cities and slums, whatever and after the incident occurs it's described as a niggatastrophe

Niggatastrophe by AK45555665454 September 1, 2013