Simple: A noob that is obligated to do noobish stuff.
Broken down: Someone who lacks intelligence or common sense (i.e., noob) and has an obligation of being just as dumb as they seem.
Man, you're such a noobligation, you can't even spell 'amazing' correctly.
Person: Did you see THAT noobligation? Every day he comes into the lunch room thinking he's gonna get some food, and every day they tell him he still doesn't have any lunch money.
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.