bagged, adj.³ — Green’s Dictionary of Slang

bagged adj.³

[printers’ jargon bag, a pot of beer and the phr. put one’s head in a bag, to be drunk]

drunk.

1953		F. Paley Rumble on the Docks (1955) 41: ‘Is he bagged?’ ‘What do you think?’ Dotty said.
1963		J. Blake letter 25 Aug. in Joint (1972) 216: Last night he came by late, half bagged.
1967–8		Baker et al. CUSS.
1981		J. Wambaugh Glitter Dome (1982) 248: He was more than half bagged.
1990		J. Wambaugh Golden Orange (1991) 154: Winnie was bagged enough to buy everyone a round of beers.