Sugar Daddy is a rich, usually older man who offers money or gifts to a less rich, usually younger person in return for companionship or sexual favors.
Your extremely hot and sexy boyfriend who would do anything for you and loves you so much that if he had that money to marry you right now, he would already be on one knee.
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.