Expression Flux is a form of gender expression where ones gender expression fluctuates in intensity, either to the "opposite" expression or not having one. "Opposite" could mean that someone fluctuates between feminine and masculine. Or one may feel that they sometimes have a gender expression, but sometimes they do not. For example, one may feel mostly feminine at one time, and then not feel any femininity the next. Expression flux people can have any gender.
History
Expression Fluid was coined on December 7th of 2020 by user Zer0Rebel4. The flag was created on December 21st of 2020, and the colors are aqua for ones gender identity, white for fluctuation and how one experiences their fluctuation, and brown for gender quality and gender expression.