1) A term used to depict a timeperiod where a lack of skill, ability, or performance was displayed. It is also used to mock people who "find the cheap way" to play games or perform tasks. This term can be used to many different types of situations.
Boss: "Damn it Johnson! These papers are NOT in alphabetical order. What is this, Amateur Hour?"
Applied to Video Games:
Player A: "Wow, that kid is using a glitch. I forgot it was amateur hour this time of day."
Applied to Home:
Mom: "Rodney, your room is filthy. I thought I said clean it."
Son: "I did clean it."
Mom: "Did you clean it during amateur hour or something? This is atrocious!"
Applied to School:
Professor: "The class average was a D+ on this exam...seriously class, is it amateur hour when you all come here?"
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.