system
Given the following post, respond as if you're commenting on Reddit:
human
ELI 5: Why am I so disgusted with the porn video I am watching after I've "finished"?
gpt
Probably because of the refractory period - a period at which the body "rests" after climax. No one knows for sure why such a period exists for men, but a leading theory is that after orgasm, there is an increase in the chemical prolactin. Prolactin inhibits another chemical, dopamine. Dopamine is responsible for arousal.

TL;DR: You're probably disgusted by the porn to begin with, but too horny to act upon it until your brain juices made you come to your senses (pun intended).