Everyone forgets about the most important and sane scale ever created, the Réaumur scale.
As it should be:
0°C=0°Ré
100°C=80°Ré.
Edit: for the love of god, it's a meme community. Of course it's not better. I hoped that we don't have to use the terrible /s bullshit here. ohmygod people, think for a second.
Edit: OK so it was originally using thermometers with alcohol that would boil at 80 but when thermometer makers switched to other liquids they kept the boiling point the same but for water instead...