More on Cook your Goose from Infoplease:

• Cook your Goose - Cook your Goose (See Goose) Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894 Related ...
• Goose - Goose A tailor's smoothing-iron; so called because its handle resembles the neck of a goose. ...
• Dictionary of Phrase and Fable: C - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "C"