Bun in the Oven 

Pregnant. The idiom bun in the oven refers to pregnancy. The “bun” is the baby, and the “oven” is the mother's womb. Perhaps it alludes to the warmth and shelter the mother's womb provides.

Teacher: "Kids, I have a Bun in the Oven"
Kids: "YAY, I WANT A BUN! GIMME"
Teacher: "I'm Pregnant."
Kids: "AW I WANTED BUNS!"

Bun in the Oven by The Internet Is Porn December 18, 2019

bun in the oven 

when a gurl is prengant.

"yeah, my gurl got a bun on the oven-just found out last week."

bun in the oven by 'lil keep' September 4, 2005

bun in the oven 

state of being pregnant

I'd like to fuck that girl with a bun in the oven.

bun in the oven by Fred October 11, 2003

a bun in the oven

to be pregnant .

I hear Wendy's got a bun in the oven.

a bun in the oven by ubi1216 February 11, 2015

carrying a bun in the oven

For a woman to be pregnant

Any illegal immigrant woman carrying a bun in the oven who comes to the United States solely to give birth to an anchor baby, well her offspring shouldn't receive automatic birthright citizenship.

carrying a bun in the oven by Uncle Dimma March 6, 2016

Dutch Bun in the Oven 

Similar to a Dutch Oven, in which one farts under the bed covers and traps a person underneath said covers, forcing them to sniff your vile ass fumes.

With a Dutch Bun in the Oven, you actually have a length of turd hanging out of your asshole, thereby adding potency and immediacy to the oven.

A Dutch Oven shart.

I almost made my girl puke this morning when I trapped her under the covers and sharted out half a turd, screaming DUTCH BUN IN THE OVEN!!!

Dutch Bun in the Oven by mbossss October 21, 2010

a bun in the oven

said of a lady who is pregnant

I don't know if my urbandictionary.com readers know this, but the expression a bun in the oven actually comes from Mario Puzo's The Godfather

a bun in the oven by Uncle Dimma January 23, 2015