the.com/bun in the oven

Pregnancy, euphemized by comparing a fetus to baked goods.

means A coy, affectionate way of saying someone is pregnant.

from A 20th-century slang idiom, first clearly recorded around the mid-1900s. It builds on the long-standing metaphor of the womb as an oven and the fetus as something baking — a comparison that shows up in various forms across folk speech because it's such a natural image: warmth, growth, time, and eventually something emerging 'done.' The phrase itself (rather than scattered 'baking' metaphors) became fixed as a stock euphemism in English, letting people announce pregnancy coyly without saying the word outright.

origin
1950s slang, rising with suburban domesticity
logic
oven equals womb, heat equals gestation
tone
cutesy way to dodge saying pregnant
irony
buns take an hour, babies take nine months
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