Sublime principle 

An offshoot of Godwin's Law stating that the longer and more obtuse a comment thread grows (specifically on Reddit), the odds that someone will make a random Avatar : The Last Airbender reference approaches one. After which the thread will devolve into nothing but Avatar jokes.

"Have you heard of the Sublime principle? It's a secret to most."
"A secret... TUNNEL?"
"Exactly."

Sublime principle by AOmundson March 11, 2019