Green’s Dictionary of Slang

1. (N.Z. drugs) to smoke second-rate marijuana.

1988		McGill Dict. of Kiwi Sl. 25/1: cabbaging smoking dope leaves, inferior product.
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].

2. to be intoxicated by drugs or drink [cabbaged adj. (3); adds image of the cabbage as a vegetable adj.].

2001

K. Sampson Outlaws (ms.) 42: Miserable, unwashed, unproud bodies cabbaging on smack for day after day.