Just after you nut where you go
"Wow this girl I just jacked off to is real nasty." Or where you loose complete sexual interest after you bust.
You- Fuck me this chick is sucking that dick so good.
You post nut- Man wtf this chick is nasty and the concept of porn is fucked up, I mean I'm getting off to someone getting off wtf man I just had a
"Masterbation Realization".
Post-nut-realization is the process of realizing something you were sexually into and after you bust a nut, you realize how fucked up it was and now you see yourself as disgusting pig (mainly happens to people under the age of 18)
Noah: “I nutted to a post of a hot girl in our school.”
Ben: “Dude what the fuck, she’s in 7th grade!”
Noah: “oh shit”
Ben: “That is called Post-Nut-Realization