The act of post-sexual activity, after engaging in an orgasm, and forgetting what happened before the nocturnal emission, and/ or ejaculation, occurred.
Person 1: So I was fucking my wife, right? And then we stopped, and I wanted left overs for dinner, but forgot what we had! Damn Cumnesia.
1. Lit. Deprived of cum.
2. Fig. Mildly bored.
3. Fig. Pitiful, Sad (affective)
It was one of those Monday, even the walls of her office were cumless. "Well, I could always call a pizza" Suzanne figured wriggling as innocently as she could at the thought of this new fulfilling project.