Green’s Dictionary of Slang

spinner-up n.

[SE spin a yarn]

(Aus.) a teller of ‘tall tales’.

[Aus]Bulletin (Sydney) 11 Aug. 15/1: Met the champion ‘spinner-up’ lately out West. He was telling us strange George Washingtons about sand-storms in the early days near Wilcannia when he was droving for a station out there.