Green’s Dictionary of Slang

sale n.

SE in slang uses

In phrases

make a sale (v.) (also sale)

(Aus./N.Z.) to vomit.

1941		Baker N.Z. Sl.
1941		Baker Popular Dict. Aus. Sl.
1955		N. Pulliam I Travelled a Lonely Land (1957) 235/2: make a sale (sell out) – to vomit.
1988		McGill Dict. of Kiwi Sl. 96/1: sale to vomit; often make a sale.
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].