I'm quoting from a book available here at MR, one of six in a series. Anyone who hasn't read them is in for a treat.
"[She] was determined, when it came her turn, to show them, as she happened to be on the spot, what a proper curtsy was.
The car came opposite her, and she curtsied so low that recovery was impossible, and she sat down in the road. Her parasol flew out of her hands, and out of her parasol flew the Union Jack. She saw a young man looking out of the window, dressed in khaki, grinning broadly, but not, so she thought, graciously, and it suddenly struck her that there was something, beside her own part in the affair, which was not as it should be."