Nostalgia Nut 

When you're jerking off to porn and realize you've seen the video before leading to you remembering the time you blew your load to it.

"Whoa..."

"What's wrong Neo?"

"I think I jerked it to this porno when I was younger."

"You remember jacking off to it?"

"Yea...what a nostalgia nut."

"Sick dude, let's blow each other again."

Nostalgia Nut by ThisIsMatthewCastro June 21, 2018

Nostalgia Nut 

A nostalgic memory from something you like (like a video game you used to play) and that nostalgia is so good it gives you a mental orgasm

Person 1: Dude, I was playing skyrim the other day and when the soundtrack kicked in I got a weird mental orgasm

Person 2: Oh I feel you, its like a nostalgia nut, right?

Person 1: EXACTLY!

Nostalgia Nut by Harolds BJBJ's December 3, 2019

Nostalgia Nut 

When you remember a chick when she was younger and she was hotter but you bust a nut to that feeling.

Hey Joseph, I just had a nostalgia Nut to arial
Damn, same!

Nostalgia Nut by GenerousWombat83 September 25, 2023

Nutstalgia

The act or pleasure from masturbating to pornography or pornographic images you have not seen for a long period of time.

(Usually directed toward internet porn where the long and somewhat never ending links to pornography make it statistically improbable to unintentionally find the same video, image, or file twice.)

Holden Caulfield felt much better about his life after feeling nutstalgia when he used the same issue of Playboy he first found the day he discovered masturbation while cleaning his boarding room's attic.

Nutstalgia by Rm327 April 20, 2010

Nutstalgia

When a group of girls reminisce on past penis experiences.

Girl 1: What's wrong
Girl 2: I'm just having serious nutstalgia right now
Girl 1: Nutstalgia for whom?!
Girl 2: From that one night I hooked up with Kevin Hart
Girl 1: **Shocked**

Nutstalgia by NUTZNBUTTZ March 30, 2015

Nutstalgia

When the nostalgia factor is so great, you nut

"When you pop in a childhood movie you loved and haven't seen in a decade, you feel an instant burst of nutstalgia."

Nutstalgia by hingedurethra April 8, 2019