Green’s Dictionary of Slang

napper tandy n.

[ult. James Napper Tandy, Irish nationalist leader (1740–1803)]

1. (Aus.) a shandy (beer and lemonade) [rhy. sl.].

[Aus]Pete’s Aussie Sl. Home Page 🌐 napper tandy: a shandy (beer and lemonade) .

2. see napper n.2 (2)