What couldn't Jack sprat?
Jack Sprat could eat no fat, his wife could eat no lean, and so between the both of them, they licked the platter clean.
A Sprat is a small herring-like, oily fish. Different species of sprat are found all over the world and are often fried and eaten or used as bait. The most common species of sprat is the European Sprat which lives in the Northeast Atlantic Ocean, the North Sea, Southern Baltic sea, Adriatic and Black Seas and in the Mediterranean. It eats dead plants and animals and shrimp.