(idiomatic, of a film) To suddenly include a strange or illogical event, often leading to radical and often disappointing changes to the narrative of the film.

(fandom slang) A seemingly innocuous detail in a story, which, upon further contemplation, carries disturbing undertones.

(fandom slang) An initially overlooked detail in a story, which, upon further contemplation, is more nonsensical or unrealistic than originally assumed, often to the point of creating a plot hole.

(minced oath, euphemistic, slang) shut the fuck up (usually expressing disbelief)

A fridge-freezer with the freezer in the lower half.

plural of upside down fridge