Getting very drunk on expensive alcohol while listening to crunk music. You have to be at least part black or be black on the inside to be considered crunkinated.
Nick wants to get crunkinated but he is much too white and likes to drink Hawkeye Vodka.
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.