Green’s Dictionary of Slang

egg flip n.

[rhy. sl.]

1. (Aus.) a whip.

[Aus]Sun. Times (Perth) 10 Nov. 65/8: I’m drivin’me Jack McNab down the field of wheat, an’ I makes a swipe at the applesauce with me egg-flip and I cops a pea over the dial.

2. (Aus.) a tip, information, usu. in horseracing.

[Aus]J. Alard He who Shoots Last 44: Dat’s wot I sez when I got da egg flip, but da vine sex he’s lookin’ hard fer ya.
[Aus]R. Aven-Bray Ridgey-Didge Oz Jack Lang 27: Egg Flip Tip (Information).
[Aus]Pete’s Aussie Sl. Home Page [Internet] egg flip: a tip, in horse racing.