When you are completely roasted toasted and caught by surprise. A term you should not often use as you should always have an ace in your hole. Hopefully, when you do use this term, those around you will be so completely and utterly destroyed both physically, mentally, and spiritually that they'll bow down and worship you.
Teacher: "Did you say further? Further means more and you can't be even more of more; the proper term is 'farther!'"
You, me, or any enlightened child: "Well slap my ass and tickle my pickle, I'm going to kill myself!"
Thicc Boi: "WHO GOES NEXT? If he's on my left and he's on my right, WHOSE IN THE MIDDLE??
Enlightened one: "Well slap my ass and tickle my pickle he's got more chromosomes than me!"
When some resigns or retires from a job, they are on "eternity leave". This can also refer to someone who has passed away, especially someone who worked somewhere for a long time, retired/resigned, then passed away later.
Oh I'm sorry, you didn't know that Kelly is on eternity leave? She resigned and moved to Hawaii!
With regrets I would like to inform you that my boss is officially on eternity leave. I will never see or hear them again. Ever.