Verb or adjective to describe when a person of color expecting to find an ally in another person of color actually finds an antagonist of the uncle tom variety. Derived from Zakiya Dalila Harris' novel The Other Black Girl.
"Man they just hired this new black girl and I swore we was gonna be cool but she straight up Other Black Girl'd me."
"They're talking about hiring a new person of color in my department and I'm hype but I'm worried she might Other Black Girl me."
"Me and Shanice were supposed to work together, but I kind of get Other Black Girl vibes from her."