A combination of a Fangirl (or fanboy) and a twatmuffin. Generally close minded overzealous fans who - upon realizing they can't win an argument - result to insults and general asshattery.
Guy one: Did you see that guy's rant on how 'awesome' Sephiroth is?
A person who is too faggalicious to be expressed with jsut the fag word, therefore the word muffin has to be added which means the person is baked to be a big fag... therefore the person is a fagmuffin...
JACK IS A FUCKNIG FAGMUFFIN WhO FUCKS WITH OTHER FAGMUFFINS SUCH AS MR.FAGMUFFIN... STUPID FAGMUFFIN!! STUPID FAGMUFFIN!! GO GET MORE ICING U JEWISH FAG MUFFIN!!!!!