Family expressions: "bribe", meaning biscuit, dates back to when Sir was at the learning-to-speak toddler stage; he's always been chronically noisy.* Once when it was getting especially wearing, I was standing in the kitchen, so I reached into the biscuit barrel, drew out a biscuit, and waggled it in front of him, saying: "Can I bribe you to silence?" He solemnly accepted the biscuit, and all was peace for a while.

A day or two later, it was reported that he'd run into the kitchen, pointed at the biscuit barrel, and said "Wants bribe! Wants bribe!"

* He still is (when he isn't sulking), and he's taller than me now.