A male fan, not necessarily juvenile. The term came into sf fandom from comics fandom. Fanboy provided a needed counterpart to femmefan, once the numbers of men and women in fandom began to even out. (Speer actually tried “he-fans,” but it didn’t take.)
Fanboy does, however, imply a certain geekiness that the distaff term does not. Note that fanboy has been adopted into the mundane vocabulary with entirely this derogatory sense.
|This is a fanspeak page. Please extend it by adding information about when and by whom it was coined, whether it’s still in use, etc.