Black belt in origami is a joke refering to one's skill in origami, generally saying that one is an adept folder. If the term is applied to origami from a martial arts perspective, a black belt in origami would be skillful in basic folding techniques and models. This is not the general population's opionion, as a black belt in origami is seen as an origami master. This belief is from the faulty idea that a martial arts black belt is a master's rank.