Pokéstalgia 

(Noun) The overwhelming feeling of nostalgia for Pokémon video or trading card games. Usually triggered by discovering a lost Gameboy or Pokémon cartridge.

Dude, I found my Gameboy Color and my old Pokémon Crystal yesterday. Got a major wave of Pokéstalgia.

Pokéstalgia by Awesome72 August 27, 2013

Pornstalgia 

The state of nostalgic longing a person experiences when one encounters a pornographic movie or actress from one's past.

Like clockwork, pornstalgia sets in every time I watch Debbie Does Dallas.

Pornstalgia by The Dapper Lizard April 23, 2009

Postalgia 

A wistful or excessively sentimental yearning for a projected future that never was.

I've just experienced postalgia today.

Postalgia by lobster111 February 25, 2019

Prestalgia 

To predict the nostalgia that will come from something that hasn't happened yet or that is happening now.
Like missing someone before they're gone.

- You know, once you guys are living in London, I'm gonna come visit you and we're gonna look back on these years and say those were some pretty awesome times.
- Ya, I think I miss this already.
- Me too.
- Aw, I can't take all this prestalgia.

Prestalgia by Philmography September 3, 2009

Prestalgia 

Prestalgia is a similar feeling to nostalgia. It's not for a time that's been in the past but rather in the future. You already feel nostalgic about these moments and you know that you'll be nostalgic about them long after they've passed. You can also be prestalgic about a big dream.

"Bro I feel so prestalgic about the trip to this pacific island. It will be something so special. Flying there in that small plane during sunrise, looking at the stars with my girlfriend or eating breakfast at the beach."
"Man that even gives me chills"

or

"If I'm done with university I really wanna do a trip through south america in a little VW Van. Just travelling and experiencing all these beautiful scenerys. I feel so much prestalgia thinking about that.

Prestalgia by lukas.jsm September 18, 2020

Prestalgia 

the sensation of nostalgia while experiencing the event that you should be nostalgic about

I felt prestalgia about the birthday party

Prestalgia by allen3 November 14, 2012

Postalgia 

That feeling when you return to something old (a place, person or people) and all your problems and traumas start coming back (resurfacing).

As the flight prepared for landing, postalgia washed over me

Postalgia by Psrd April 23, 2025