Massey-Harris, n. — Green’s Dictionary of Slang

Massey-Harris n.

[pun on the Massey-Harris self-binder (an early combine harvester); the ref. is to the ‘binding’ effects of cheese on the digestion]

(Aus./Can.) cheese.

1953		Baker Aus. Speaks.
1968		S. Gore Holy Smoke 9: And a few pounds of Massey Harris for the officer’s mess as well – seeing he done a bit of dairying on the side, an’ had more cheese than he knew what to do with.