What or who was a knocker-upper?

and the knocker upper sometimes had his or her own knocker upper, known as a "knocker uppers knocker upper" true fact!

knocked up means something different in the USA today lol

Used to be a call boy here in Australia

The slang version of "knocked up" reaches back to the 1500s, when "knock her" was a common euphemism for having sex with a woman. So both uses, English and American, are quite old, but vastly different from one another.

In UK, until mid 20th century, there were also sirens a desig ated period of time before factory shift started. Most workers lived within walking distance of the factory

But nowadays no need for a knocker upper you can wake up by yourself by the Alarm Clock

I’d much rather be knocked up in England than in the United States!! 😜

Moray, yeah same in Ireland , being pregnant 🤰