A somewhat covert term that conveys the message that you're pregnant. Also effective in a string of other colloquial terms for pregnancy.
Pregnant woman: Guess what dude!
Other person: What?
Pregnant woman:The factory is active
Other person: .....huh?
Pregnant woman: Im preggo, knocked up, there's a bun in the oven, the factory is active. Get it now?
**Other person is stunned speachless**