脑残粉

腦殘粉
nǎocánfěn
  1. (slang) fanboy
  2. fangirl

CEDICT

slang

Entry Composition

1 脑残 nǎocán
  1. moronic
  2. brainless
  3. bonehead
  4. retard
2 粉 fěn
  1. powder
  2. cosmetic face powder
  3. food prepared from starch; noodles or pasta made from any kind of flour
  4. to turn to powder
  5. (dialect) to whitewash
  6. white
  7. pink
  8. (suffix) fan (abbr. for 粉丝 fěnsī)
  9. to be a fan of