Green’s Dictionary of Slang

1. (also blocked up, block up) drunk or intoxicated with a drug, usu. cannabis or barbiturates; thus block up v., to get intoxicated.

1959		A. Salkey Quality of Violence (1978) 27: You must want to block me up. That white rum is a bad thing, you know!
1961		T. Taylor Baron’s Court All Change (2011) 28: ‘Bill Higginwell must have enjoyed my deal. [...] Block-up to hell, he was’.
1962		J. Blake letter 24 July in Joint (1972) 186: He came over one night, bringing pot and a jug of wine, and we got blocked.
1963–74		B. Humphries Barry McKenzie [comic strip] in Complete Barry McKenzie (1988) 22: He’s just swallowed twenty-eight purple hearts! He’ll be blocked out of his mind.
1966		T. Keyes All Night Stand 123: We get good and blocked now.
1967		N. Dunn Poor Cow 24: He understood about taking pills and getting blocked.
1968		A. Salkey Late Emancipation of Jerry Stover (1982) 7: Can’t understan’ why you mus’ usual come to me when you’ block up in you’ Black Seal?
1969		I. Hebditch ‘Weekend’ unpub. thesis in Hewitt (2000) 134: Jack and me are starting to feel a bit blocked as well.
1971		M. Novotny Kings Road 145: I fancy getting blocked. Got any grass?
1973		(con. mid-1960s) J. Patrick Glasgow Gang Observed 231: blocked up – ‘high’ with drugs.
1979		New Musical Express 12 May n.p.: Jimmy rides out, blocked and happy, on his multi-coloured scooter [KH].
2000		(con. 1940s–60s) Décharné Straight from the Fridge Dad.
2006		in D. Seabrook Jack of Jumps (2007) 124: She was always on the purple hearts, she was always blocked up.
2019		P. Baker Fabulosa 289/2: blocked to be high on drugs.
2024		J. Meades Empty Wigs (t/s) 116: The heavily tooled up, totally blocked and stupidly reckless will still chance their arm.

2. (N.Z.) full of food.

2003

McGill Reed Dict. of N.Z. Sl.