It's where you have to stay at home for 40 days, because
French for 40 is quarante. But it's mistaken by idiots who
think quarantine is another word for
coronavirus.
Me: What does quarantine mean?
Nerd: Coronavirus!
Me: No, it means where you have to stay at home for 40 days.
Nerd: You patronising smartass, you are dumb.
Me: You are dumb with nerd glasses on, but
maybe you know a lot about algorithms.