E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Crook in the Lot.
There is a crook in the lot of everyone. There is vexation bound up in every persons lot of life, a skeleton in the cupboard of every house. A crook in a stick is a bend, a part where the stick does not run straight, hence a shepherds crook. When lots were drawn by bits of stick, it was desirable to get sticks which were smooth and straight; but it is very hard to find one without a crook, knot, or some other defect. Boston has a book entitled The Crook in the Lot.