got a bun in the oven

If someone says they have a bun in the oven, they are most likely referring to being pregnant. With this phrase, oven is referring to the womb and bun is referring to the baby. Bun in the oven is a very common phrase when talking about a woman who is pregnant, and has been used for many years. Most people recognize this saying to mean pregnancy, as a bun in the oven symbolizes the womans bun growing as time goes on.