Mike Sandells 
Thomas
(I was shocked when I realised that comic is only from 2020 🤯)
Tom Walker@HorayNarea xkcd comics have a very quick journey from "funny" to "received wisdom"
Anna@HorayNarea ok this has blown my mind. Time has no meaning
Johann z. Baag (ej af Puss-B.)@HorayNarea Me too!
I double-checked (using archive.org and explainxkcd.com), and apparently https://xkcd.com/2347/ came out on Mon 17 August 2020.
It **is** almost six years ago now, and more than four years before your toot, but still...
Václav VESELÝ@HorayNarea knock knock! Who is there? Recursion! Knock knock!
Axel@HorayNarea
This comic should have been in SVG, for proper recursion.
This comic should have been in SVG, for proper recursion.