Green’s Dictionary of Slang

1. (Aus.) a joke, witticisms.

1983		J. Byrell (con. 1959) Up the Cross 14: Cracking funnies or dropping hints.
2009		L. McIlvanney All the Colours 308: [T]his blowhard at the bar starts riding the guy, cracking funnies.
2017		A. Parks Bloody January 75: [He] was about to start on another funny.

2. see funny money n. (1)