horrorstalgia 

That sickening feeling when you remember horrible or exceedingly embarrassing everyday occurrences from childhood or 'the good old days'. This usually comes just after some happy memory of the past and while basking in the nostalgic glory when suddenly a horrible recollection of reality intrudes.

Kim: Mum used to press our jeans with a front seam.

Brandon: Of course she did. I feel that's best described as horrorstalgia

horrorstalgia by PopviZ February 12, 2022

Hornostalgia 

The feeling of nostalgia, as it relates to being young & horny.

Ex. 1 "Disney's Atlantis is a source of Hornostalgia for a lot of millennials."

Ex. 2 "I just got tickets to Space Jam 2!"
"Big Lebron fan?"
"No, Lola just just makes me Hornostalgic."

Hornostalgia by Big Papa J April 26, 2023