xkcd #3232: Countdown Standard
Title text:
Anyone who is caught counting ‘three … two … one … zero … GO!’ will be punished with a lifetime of eating only ISO standard food samples.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3232/
No one ever uses fortnightly though. I have a hard time even remembering what it means as it’s never used.
Americans never use fortnight. I suspect this is because very few get to enjoy 2 weeks of uninterrupted vacation.