Green’s Dictionary of Slang

(US) a black person.

1969		N. Spinrad Bug Jack Barron 7: The two men [...] in the Mississippi State Police (coon to the right) and the Mississippi National Guard (schvug to the left) uniforms.
1978		R. Price Ladies’ Man (1985) 106: You were always into that fuckin’, ah, ah, I dunno, counterculture shit, remember? Hootenannies, schvugs.
1990		(con. early 1950s) J. Ellroy L.A. Confidential 221: It’s the shvartzes, it’s the fucking shvoogies.
2001		(con. 1964–8) J. Ellroy Cold Six Thousand 242: Pal of the aforementioned schvoog-killer Wayne Tedrow Junior. [Ibid.] 554: The first, the welfare checks are out, and it’s payday for the few shvoogies who work.
2021		J. Ellroy Widespread Panic 2004: She was holding hands with a shvoogie.