What holiday became popular after it was featured on an episode of Seinfeld? Answer

Imagine a winter celebration born from a television script that eventually escaped the screen to find a place in real living rooms. This holiday is Festivus, famously introduced to the world through the antics of Frank Costanza during a classic episode of the sitcom Seinfeld. It serves as a humorous protest against the commercialism of Christmas, replacing the bright lights and expensive gifts with a solitary, undecorated aluminum pole that stands strictly for its very high strength-to-weight ratio.

Source:

https://www.youtube.com/watch?v=JhwPm2q4lfs

https://www.threads.com/@beliproduk.official/post/DS7ui6MktrF