epiphanesia

The experience of having a significant epiphany about one's life only to immediately forget it.

A conflation of the words epiphany + amnesia.

Origins
epiphany: Middle English epiphanie, from Anglo-French, from Late Latin epiphania, from Late Greek, plural, probably alteration of Greek epiphaneia appearance, manifestation.

amnesia: New Latin, from Greek amnēsia forgetfulness, alteration of amnēstia

Norman was stricken by epiphanesia immediately after his sudden and inexplicable insight into how he became a graphic designer leaving him unable to explain it or even remember why he wanted to know.

epiphanesia by Double-Nine September 21, 2016

Seat of epiphanies

A place where you have primarily have realizations, typically a toilet.

Yo Kendra, I just had a eureka moment on the seat of epiphanies.

Seat of epiphanies by Grand Duke Ferdinand December 20, 2021

Epiphanistic 

Epiphany = a sudden realisation of the clarity of the truth or meaning of something

Epiphanistic = an event or activity that is likely to bring about an Epiphany

Epiphanistic Thinker = a person who regularly has Epiphanies.

"Walking in these woods is Epiphanistic, I've had three great ideas so far."

Epiphanistic by ROxford November 30, 2017

epiphanissimo 

a moment where you realize something that changes your life. (i.e., a really big epiphany.)

"woah! i totally just had an epiphanissimo!"
"really? what about?"
"i realized i'm gay!"

epiphanissimo by caroline! August 14, 2006

Epiphanismic 

Epiphanismic is a persons response to someone following an epiphany.

Eg - following an inspirational idea:

"Thats totally epiphanismic!"

Epiphanismic by Natalie Bannister December 28, 2008