boxism
The practice, system, or philosophy of putting someone (or yourself) in a box. Using personality types to describe people who are complex beings that should not be categorized to simplified lists of set personality types (Myers Briggs, 4 Temperaments, Enneagram, introvert/extrovert, etc.).
He doesn't subscribe to boxism, and doesn't see himself an introvert or extrovert, and doesn't agree with being "boxed" in any particular personality types (MBTI, 4 Temperaments, Enneagram).
Boxism
A religious practice where an individual worships the 16 box gods (Boxis and the Holy 15), who are the ones responsible for creating and watching over the universe.
“Boxism is a cool religion!”