Canto Slang: Sell Salted Duck Eggs

CANTO SLANG:  EPISODE 15

Here’s an ancient one that you’ll hear from your parents or grandparents’ mouths and less from the younger generation.

SELL SALTED DUCK EGGS

WTF is that?  This one is a bit out of context, and it’s pretty hard to guess the slang meaning just from seeing those 4 words.