have a bun in the oven
US /hæv ə bʌn ɪn ðə ˈʌvən/
UK /hæv ə bʌn ɪn ðə ˈʌvən/

1.
sedang hamil, mengandung
to be pregnant
:
•
My sister just announced she has a bun in the oven!
Kakakku baru saja mengumumkan dia sedang hamil!
•
They're keeping it a secret, but I think she has a bun in the oven.
Mereka merahasiakannya, tapi kurasa dia sedang hamil.