Sports Personality Of The Year...
Film, Media & TV0 min ago
No best answer has yet been selected by tinaefish. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.I can only imagine that it arose spontaneously as a slightly disparaging jocular term for a tea-party. It conjures up a suitable image of an occasion with lots of hand-sized food, and perhaps some rather fierce elderly ladies about the place. I've heard it used particularly for local public events, such as the tea at a village fete.
Didn't the Goons do an episode entitled "Bun Fight at the OK Tea Rooms"?