1) I’ve often heard the phrase “The world is your oyster” (or, my, his, her, or whatever pronoun fits the context).
I understand what the phrase means, but I am puzzled by the word oyster. Can anyone explain where this phrase comes from? I really don’t understand and I’m curious about how the world can be likened to an oyster!
2) I’m writing a short Downton Abbey fanfic. Is “knocked up” a term O’Brien would use when talking to Thomas about somebody who accidentally got pregnant?