zigzag, adj. — Green’s Dictionary of Slang

zigzag adj.

also zig-a-zag

[one’s unsteady gait; reinforced in sense 2 by Zig-Zag rolling papers]

1. drunk.

1917		B.E.F. Times 10 Apr. (2006) 189/1: Bosch officer, no ben, plenty zig-zag.
1921		N&Q 12 Ser. IX 425: Zig-A-Zag (Zigzag). Drunk.
1932		B.M. Harvey Me and Bad Eye and Slim 105: I was pretty zig-zag and woke up the whole stable.

2. (drugs) intoxicated by a drug.

1959