Cassboy

Definitions and Usage
Cassboy (could also be called cassman or cassmale) is when one feels that their gender is unimportant or is indifferent to the concept of gender, but knows that their gender is somewhat male/masculine.

Related Terms
Cassboy is a subset of cassgender as well as the male counterpart to cassgirl and cassenby. Cassboy individuals may also use terms like genderqueer to describe themself.

Flags
It can be assumed the cassboy flag is meant to resemble the cassgender flag, with the green stripe replaced by a blue one.