The lost eighth day of the week that was never officially written in the bible. "And after his day of rest and thinking god realized that he had forgotten the most important thing so he said, let there be joy in taste perfection, then majestically god parted the clouds and sent forth eleven angels carrying the burden of a gargantuan platter of nachos."
The Word trianday is derived from the holy shape of nachos.

when you've done something so cringe you can't stop replaying it in your head and it stops you from getting on with your every day life