marmalade dropper

Etymology
Suggesting the idea of an astonished person dropping marmalade at the breakfast table while reading or hearing the news.

Noun

 * 1)  Highly stunning information, especially something learned from the news media.
 * 2) * 2023 'The return of David Cameron: What is going on?', BBC News.
 * "Just because something is a marmalade dropper, doesn't make it a good idea."

Synonyms

 * muffin choker