You meet a possible one-nighter. You think she's a six.
You fuck her. You tell your friends she's a nine. (you might even start to believe it).
A week later you realize with disgust that you actually just had sex with a three.
Guy sees female. "She is definitely hot enough for me to fuck with pride".
Guy fucks female. "I got lucky. Can't believe that piece of ass even went for me".
Time passes... "AWE FUCK!!! I just fucked a whale".
Guys Friend: "You just fell victim to 693 syndrome!" Haha sucks for you