Green’s Dictionary of Slang

King Kong n.

[the name of the fictitious monster ape, who ‘starred’ in the film King Kong (1933)]

1. (US black, also kong) cheap, potent, homemade whisky.

[US]A.J. Liebling Back Where I Came From (1990) 153: The wine of the country [i.e. Harlem] is a liquid sometimes called King Kong [...] The better form [...] is moonshine prepared in kitchen stills from hominy in grits and sugar [...] There is a lower form made from grain alcohol adulterated with rye flavoring.
[US]D. Burley N.Y. Amsterdam News 15 Jan. 17/1: [A] puff of weed, a shot of ‘king kong’ and a batch of weakfish.
[US]I. Wolfert Tucker’s People (1944) 55: It was nickel-a-drink whisky, the kind the Negroes called King Kong.
[US]D. Burley Orig. Hbk of Harlem Jive 12: She’s in her dried barkers like kong in glassware.
[US]‘Hal Ellson’ Duke viii: King Kong – a cheap, potent, usually illegally made drink.
[US]Murtagh & Harris Cast the First Stone 24: Monkey’s King kong certainly did pack a tremendous wallop and there was no telling the effects it could have on people.
[US] in S. Harris Hellhole 117: A notorious and pitiful drunk who spent most of the relief check on cheap wine or king kong.
[US]Eble Sl. and Sociability 82: Most striking is the lack of terms for drinking and drunk. There are only 7 in 435: conk-buster, ink, King Kong, and kong all refer to cheap varieties of wine and liquor.

2. attrib. use of sense 1.

[US]Mezzrow & Wolfe Really the Blues 247: On the second floor was a King Kong speakeasy, where you could get yourself five-cent and ten-cent shots of home-brewed corn, if you didn’t care about dissolving the enamel on your teeth.

3. (US drugs) a strong addiction.

[US]Smith & Gay Heroin in Perspective 204: King Kong. A big monkey ($200 or more a day heroin habit).

In phrases

King Kong pills (n.)

(drugs) barbiturates.

[US]R.R. Lingeman Drugs from A to Z (1970) 137: king-kong pills barbiturates or other sedative pills. Compare gorilla pills.
[US]D.E. Miller Bk of Jargon 338: King Kong pills: Sedatives, barbiturates.
[US]ONDCP Street Terms 13: King Kong pills — Depressants.
sleep with King Kong (v.)

(US drugs) to be a habitual user of heroin.

W.D. Myers Dope Sick 54: I cut back some. I wasn’t completely correct, and she knew it, but I wasn’t sleeping with King Kong every day either.
what’s your song, King Kong?

(US black) all-purpose intterog. phr.: how are you feeling? what’s your news? etc.

[US]Pitsburgh Courier (PA) 22 Aug. 7/7: What’s your song, King Kong — how do you feel? what’s your trouble? what’s the news?