2; Someone who can inexplainably sense when a black person is involved in any one given situation, often including a consequential sense of blame upon the person.
Person 1: "Don't let that Britney lookin' broad fool you, she's got a little sometin' sometin' in her."
Person 2: "You heard it boys...the boo stinker has spoken!"
Person 1: "What? Someone messed up your ride? It was that black motherfucka whose girl tried to hit you up last month!"
Person 2: "Shit boo stinker, you gifted son!"