The feeling that you are currently experiencing a moment that you will look back fondly about in years to come.
Adjective: Nowstalgic
During a first date, John quipped to Jane that he was feeling a moment of nowstalgia, "Just think, years from now, we will look back on this moment as where it all started. Let's take a picture to show the grandkids!"
A phrase used when you have accomplished everything you've set out to do. By uttering this phrase, you are implying that there is nothing else left for you to do except die.
An expression demonstrating the fact that one is in a focused state and cannot be bothered with minutiae. Originated from the viral video "My New Haircut"
Gym Attendant: "Sir, you need to sign in."
Creepy Italian Dude: "Not nowchief, I'm in the fuckin' zone!"