A term used on 4chan's /lgbt/ board to refer to the technique of deliberately gaining weight in order to soften one's bone structure or accentuate features such as hips in the hopes that it will improve passing chances, a process typically (but not exclusively) undertaken by transfeminine individuals.
I thought my shoulder-to-hipratio was going to be the death of me as far as passing goes but after fatmaxxing my hips have filled out enough to where it isn't an issue anymore.
Hey.. remember that 70-year guy who lives across the street? Apparently his Safari crashed and he asked me to fix his Apple Macintosh so that he could buy tickets for Justin Bieber concert to go with his 13-year old neighbor. What a fagmax.
Famma is a term used to describe a girl that is fat and named emma. You can sense a Famma coming whenever you hear loud thuds and stomps coming your way.
Woah! Do you hear those stomps? I bet it’s a Famma.
The act of intentionally making yourself appear as queer as much as possible. Fagmaxxing transcends regular homosexuality, and often takes on stereotypes. Often done as a joke or unintentionally in rainbow-capitalism.