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/
Why use a number then!?
Saying three implies one and two.
Why not say "on my mark" or something?
I didn't say it was not confusing. It's part of the joke.