Green’s Dictionary of Slang

shellacked adj.

(US) drunk.

1922		Ogden Standard Examiner 12 Apr. 6/5: We drifted to a couple of the clubs, and both the boys got beautifully shellacked.
1935		(con. 1920s) J.T. Farrell Judgement Day in Studs Lonigan (1936) 533: When I first found out about how you’d get shellacked, I thought it was pretty terrible.
1965		W.C. Anderson Adam M-1 227: We don’t get very shellacked this way.
1996		R. Rendell Keys to the Street 266: He’d never asked his mother, but the answer probably was she was too shellacked to take him.