A gesture of extreme anger, commonly used in south harlem, if somebody messes up the boss shouts this and everybody knows whats up; that somebody fucked up
Thomas walks in and shoots the officer without first deciding on better judgement. Pito runs in hearing the shots and hollors "who spilled the god damn koolaid up in this mother?!?! I oughta shoot you myself for spilling that god damn holy liquid. And a cop too?!?! u busted out the grape packets for this shit, mother fucker"