Puppycow
Penultimate Amazing
Thank you.
Similarly, stop using "and/or" in speech and writing unless you are discussing logic or computer programming.
Nobody did this before computers. In ordinary parlance, "or" already means and/or.
For that matter, "and/or"-sayers, to be technically correct, you should say "and/xor", which reduces to "or" anyway. "And/or" is thus always wrong.
Japanese has a word that corresponds to and/or and a word that corresponds to xor. I don't know if I agree with your claim though that "or" means and/or in ordinary parlance. Maybe depending on the context.