Green’s Dictionary of Slang

1. (Aus.) a swizzlestick, used for stirring cocktails.

1941

Baker Popular Dict. Aus. Sl.

2. cannabis; a cannabis cigarette [stick n. (6d); note one of the drug’s effects is to make one giggle].

1943		D. Burley N.Y. Amsterdam News 3 July 16: We crumb-crushed your spiel about the ‘Seven Skulls’ just killing themselves on the gauge tip, lippin’ a lone giggle stick.
1944		D. Burley Orig. Hbk of Harlem Jive 122: [as previous].