Green’s Dictionary of Slang

sneaky joe n.

[play on sneaky pete n. (1)]

cheap brandy.

[US]E. De Roo Young Wolves 98: He was pouring a jug of wine into the cocoa. [...] ‘A little Sneaky Pete’—he motioned for Janet to come out of hiding with a quart bottle of brandy—‘and a little Sneaky Joe’.