Flemington confetti, n. — Green’s Dictionary of Slang

Flemington confetti n.

[? Flemington racecourse, covered in torn-up betting slips etc. at the end of a major meeting; or Flemington saleyards in Sydney and Melbourne; note Baker (1943): ‘c.f. bullsh. (Flemington is well-known for its stockyards)’]

(Aus.) rubbish, nonsense, ‘tripe’.

1933		Nat. Advocate (Brisbane) 2 Mar. 2/5: Hansard referred to the proposed saving if the undertaking was carried to completion without any break in the operations, as a bit of ‘Flemlngton confetti’.
1941		Baker Popular Dict. Aus. Sl. 22: Cowyard confetti as for ‘bullsh’. [Ibid.] 11: Flemington confetti: Rubbish.
1951		D. Stivens Jimmy Brockett 230: You could pull the wad over his eyes if you talked enough Flemington confetti about the woes of the working class.