The opposite of post nut clarity
Example-You give them the best sex of there life now they are promising you the world even though 5 mins ago they were pissed off at you and wanted nothing to do with you
Definition Nut Fog = The act of which the sex was so good it makes that person fall madly in love with the other for a short period of time even if there are inherent flaws and said party caused the problems to begin with.