For Which Occasions: Culinary, Postprandial, Formal. Matters of State Protocol and Diplomacy (Sparingly).
To Be Used: When somebody well-meaning is Really Not Helping, perhaps vigorously.
The Metaphor: "It's as though I said I didn't like Kentucky Fried Chicken, and you decided it must be rumors of rats in the food. And you'd decided to help by putting up a sign next to the condiment bins that says 'Goes Great With Rodent.'"
To Be Used: When somebody well-meaning is Really Not Helping, perhaps vigorously.
The Metaphor: "It's as though I said I didn't like Kentucky Fried Chicken, and you decided it must be rumors of rats in the food. And you'd decided to help by putting up a sign next to the condiment bins that says 'Goes Great With Rodent.'"