yes, of course, why do you ask when you know the answer?

The expression - part of the "does a bear shit in the woods?" family - is used to reply to a question that accepts only one obvious answer: an unambiguous "yes"
Two weeks ago I had a letter from the Prime Minister asking if I would be willing to receive the honour - Commander of the British Empire - if the Queen sanctioned it? Can a duck swim?
by Colourful English May 9, 2006
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