xkcd #3140: Biology Department
Title text:
Welcome to the Linguistics Department - It has been [2] [DAYS] since someone noticed that the Biology Department sign has a one-day-long singular/plural disagreement after it resets.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3140/
that's amazing because I'm pretty sure he probably based it on real life; there are tribes that count very similarly to this (also covered in Ifrah's book). there are languages with words for one, two and many, or 1-4 and many, but they can use combinations like two-one to mean three and two-two to mean four etc.