Green’s Dictionary of Slang

1. (Aus.) the moon.

1905		Duke Tritton’s Letter n.p.: The Hot Cross Bun was down and the Silver Spoon was rising when I spread the Wagga and turned in.
2002		M. Coles More Bible in Cockney 55: The Bath bun will become dark and the silver spoon will turn red.
2002		Pete’s Aussie Sl. Home Page 🌐 silver spoon: the moon.

2. a pimp [ = hoon n. (1)].

1990

Tupper & Wortley Aus. Prison Sl. Gloss. 🌐 Silver spoon. A pimp. Rhyming slang for ‘hoon’.