From A Quiet Life in the Country, by T. E. Kinsey:

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"I was four years old and recited Newton's Laws of Motion to her and then played "Frère Jacques"--quite badly, she says--on the piano before announcing that when I grew up I was going to be a polar bear."
"You were ambitious, even then."

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[Though I still like the tmesis-enhanced "la-di-da" best, this is pretty good: "[Blimmin] Lah-di-Dah" as an aristocratic seat! (Note that the variant of the intensive "blooming" is evidently part of the place name, as it's capitalized. Meanwhile, the "di" in Lah-di-Dah is lowercased, because presumably it derives from the Italian "di" or the French "de.")]

"And now she swans around here like the Duchess of Blimmin Lah-di-Dah..."

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"You know the sort of thing: Lady Evangeline Dullard of the Hampshire Dullards was seen dining out with the Honourable Tarquin Jackanapes."

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"She's forever poking her nose in at the office, too, y'know. In and out like a fiddler's elbow."

[I see that "in and out like a fiddler's elbow" is a known phrase, but it was new to me.]

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"'She's all there and halfway back,' as Mrs. Sunderland says."

[Now, this one only brings up two Google hits, both from Google Books, and both 21st-century. (The present book is also 21st-century, but supposedly set in the early 1900s.)
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