饭圈

Meaning

sfw (受腐唯/shoufuwei) is fandom slang for a solo stan who ships BL couples. "Shou" means bottom in BL relationships, "fu" means BL shipping, "wei" means solo fan. They ship their male idol as the bottom with other male idols, but never become fans of the other party, treating them as mere tools. Opposite is gfw (攻腐唯/gongfuwei).