Title text:
Geologists claim it's because the earlier Cenozoic used to be called the Tertiary, but that's just a ruse to hide the secret third geologic period, between the Neogene and the Quaternary, that they won't tell us about.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3120/
It has been feeling more and more like the 1700s around here lately.