The Diss Goes MSM
I noticed this on Norman Spector's site today:

PETER WORTHINGTON disses his own paper and Romeo Dallaire:

A while ago I was known as a "Professor Emeritus of Ebonics, UVic" so can say with what white guy street cred I have that the usage was somewhat incorrect, but I hear that Mr. Spector is quite a linguist so I'm sure he'll master Ebonics in no time.

Explainer: "Diss" is short for "Disrespect"