A 'skeepter' is someone who you dislike and is a word generally used to describe people who annoy you. It is commonly used as a descriptor of people who make you want to leave a particular conversation.
Person 1: Dang, that person is a real skeepter.
Person 2: Yeah I agree there are way too many skeepters here, we should leave.
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.