Green’s Dictionary of Slang

(US) (orig. A.A. j.) drunk but wanting another drink; in fig. use, confused, undecided.

1971		in Quarterly Journal of Studies on Alcohol XXXII 734: Mocus Intoxicated [HDAS].
1970		M. Gattzden Black Vendetta 38: I’m mokus. Canned. Don’t know nothing [HDAS].
1989		L. Block Out on the Cutting Edge 160: The speaker was sober less than six months, still what they call mocus--mixed up, confused, uncentered.