Well, the entirety of Lady Bracknell's interview with Jack from "The Importance of Being Earnest" is to me the funniest scene ever written (especially as played in the classic film version from 1952 with Dame Edith Evans as Bracknell and Sir Michael Redgrave as Jack):
Lady Bracknell: Are your parents living?
Jack Worthing: I have lost both my parents.
Lady Bracknell: To lose one parent, Mr. Worthing, may be regarded as a misfortune; to lose both looks like carelessness.
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Lady Bracknell: Do you smoke?
Jack (né Ernest) Worthing: Well yes, I must admit I smoke.
Lady Bracknell: I'm glad to hear it. A man should have an occupation of some kind.
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Lady Bracknell: Ignorance is like a delicate exotic fruit; touch it and the bloom is gone. The whole theory of modern education is radically unsound. Fortunately, in England at any rate, education produces no effect whatsoever.
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Lady Bracknell: Thirty-five is an attractive age. London is full of women of the highest birth who have, of their own free choice, remained thirty-five for years.
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Lady Bracknell: To speak frankly, I am not in favour of long engagements. They give people an opportunity of finding out each other's characters before marriage. Which I think is never advisable.
"What a story........ everything but the bloodhounds snappin' at her rear end." -- Birdie
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"The Devil Be Hittin' Me" -- Whitney