Mascflux is a gender identity in which a person can feel mostly or completely male most of the time but experiences varying degrees of male identity. For example, one could feel 0% (agender), 50% (demiboy), 100% (male), or anything in between like paraboy or libramasculine. The intensity can fluctuate over any period of time.
Another definition of mascflux would be unlike boyflux, mascflux is for those who don't really feel "boy" in their gender, but feel masc instead. The intensity of the masc in their gender fluctuates, like with all other flux genders.
Mascflux is a type of genderfluidity and a subset of genderflux. Genderflux is a term used to describe any gender‘s intensity fluctuating. Mascflux is a specific gender off of genderflux, but it can be any binary or nonbinary gender. (i.e agenderflux, girlflux, bigenderflux). Mascflux can be synonymous with boyflux.