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A sudden rush of childhood or fond memories that strikes you almost instantaneously and puts in a nostalgic relaxant state for a random period of time.

Pastgasms can occur when watching media from your childhood or youth, playing a game or activity with someone you've known for a long time, or even when you think of one or more nostalgic moments that link together into a web of memories.

The word pastgasm originated from an internet conversation with a user named SkillZombie. He and the other user were watching videos of old shows on Youtube that they had believed they had forgotten about. When one particular show had been viewed by the pair, SkillZombie had said "Whoa, I think I just pastgasmed."

The amount of time an individual is affected by a pastgasm depends on how deeply rooted or cherished the memory is by the individual. If they have a pastgasm that was triggered by the memory of a good day they had, it may only last a few seconds. If they have a pastgasm that was triggered by a memory that was a staple in their childhood or past, it may last for at least a few minutes.
1. After seeing an entire DVD of "Thundercats", Josh pastgasmed for the next few seconds.

2. During a game of manhunt, Jasmine was caught because a pastgasm she had from remembering the game froze her in her place momentarily so she couldn't escape.
Pastgasm by SkillZombie September 11, 2009
Related Words

Phantgasm 

An unexplained orgasm that comes without warning and feels like awesome.
My girlfriend was sitting on the opposite side of the couch as me and she started screaming in pleasure because she was having a phantgasm
Phantgasm by beanflop January 8, 2012

Plantgasm 

When a plant realses its pollen to then go impregnate other plants from afar without the distress of paying child support
Wow that perfume smells like a GREAT plantgasm.
Plantgasm by AsraLeGay August 9, 2020

pangasmaboger 

one that acts as a retarded person on accident, but actually feels they are cool.
did you see john dancing at the party? he is such a pangasmaboger.
pangasmaboger by mr poopy pants November 22, 2007

Pantsgasm 

Having just orgasmed inside your pants, involuntarily.
John said, "Dude, this cheeseburger gave me a pantsgasm."
A panigasm occurs during deep copulation as the hour strikes midnight, and the garage door opens to the sound of, 'honey, I'm home!' While simultaneously cumming and gasping with horror, you pull out and accidentally cum all over said girl, new sheets, innocent pet, or all of the above.Note: True panigasm happens on parent's bed.
I was enjoying the fruits of my gay porn, when my favorite Thai boy toy screen idol and wife's emergence from the door coincided. I instantly had a panigasm all over my wife's horrified face, hands, and frozen pork dumplings in the Trader Joe's bag.

Late one evening at the office, my slim secretary was polishing the better part of myself under my mahogany desk, when my girlfriend decided to surprise me with my favorite dollar dumplings. I screamed silently as my panigasm shoved me further into my secretary's mouth, bumping her head violently underneath my desk.
Panigasm by denalipark227 April 25, 2010
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