The Duncan Theory
The phenomenon that causes females to be inexplicably attracted to a random male, like moths to a flame. The art of seduction, commonly referred to as "The Duncan theory'', can have a tremendous effect on the victim.

Also known as "The Duncan Theorem"
The inexplicable phenomenon that causes females to be drawn to a single male (The Duncan) in droves.

The strength at which females are attracted is equal to the grade of symmetry of his face multiplied by the pitch of his voice, and reversed to his age divided by the concentration of his natural pheromones.
I lost my gf due to some guy named Duncan. I swear he just looked at her and she instantaneously became overwhelmingly wet... Hashtag The Duncan Theory

That new Duncan kid looked at me today, I felt a strong magnetic force pulling me closer to him, as my knickers got wet, he spoke "Hey Jenny" ... I swear to god I almost exploded #TheDuncanTheory