The holiday contrasting the Jewish High Holy Day, Yom Kippur, where you instead indulge in a multitude of sinful activities, unbothered by the religious consequences of those actions.
“Im really glad I spent today celebrating Ron Chipper”
“Dude are you hammered? Do you mean Yom Kippur? Aren’t you supposed to fast and repent?”
“No that’s a different holiday. I recognize Ron Chipper, instead.”