Jacks are home runs. So are dongs, bombs, and big flies. Baseball people express their fondness for a thing by thinking up lots of different ways to say it.
A young woman, newly wed, may find herself in the delightful position of wanting to do nothing without the company of her darling husband. She may indeed discover that she spends all her waking hours with her fellow to the exclusion of every other friend or family member. This is understandable, but wholly unacceptable, to society.