Jap. 腐女子. literally: rotten girl. A pun, based on the homonymous term for woman (jap. 婦女子). Ironical self-description by readers of Yaoi Dōjinshi. The female counterpart to the male Otaku.
(translated from the german wikipedia page for Otaku)
I'm a fujoshi.
(The rulesets demand me to write shit even though I don't know what I'm talking about, and at the same time prevents me to link an image that'll explain things better than a thousand words)