TIL knocker uppers were people who went around knocking on windows to wake people up in pre-alarmclock times.

https://lemmy.ca/post/61434672

TIL knocker uppers where people who went around knocking on windows to wake people up in pre-alarmclock times. - Lemmy.ca

Lemmy

So then I’m curious how the phrase “knocked up” came to mean getting pregnant.
Wake the husband up with a knock, continue route, circle back in abit cause you know hes now gone to work?