Green’s Dictionary of Slang

Kids Beer n.

(Aus., also Kiddies’ Beer) a child’s nickname for KB beer.

Google Groups: alt.fan.pratchett 2 Feb. 🌐 A common alternative BEER for XXXX in sunny Oz is KB, which is known variously as Kids Beer or Kangaroo Bile depending on your point of view.
Google Groups: aus.general 15 Sept. 🌐 The name was KB, short for Kent Brewery, the name of the old Resches-Tooths brewery on Broadway, near central station. Sweet and frothy, in a gold, rought-textured can with a red KB logo, it was sometimes referred to as Kids’ Beer, and with good reason.
B. Fingerton in Rock The Bloody Boat! 31 Aug. 🌐 In CUB’s defence, there are actually some great beers in their stable, like the old school KB. ‘Kids’ Beer’, we used to call it as we gulped it down as teenagers.