Niner fan 

Old definition: Classy group of men and woman who love sports and will root for their team no matter how they preform on Thursdays, Saturdays, Sundays, or Mondays

New definition: Bandwagoners

"Why is that Niner fans being loud when their team is on offense?"

Niner fan by 9ers June 19, 2013

Forty-Niners fan 

A Forty-Niners fan will only come to games and root for their team when on a real good winning streak. Sadly otherwise they are silent and MIA.

A forty-niners fan will only come to games and root for their team when on a real good winning streak. Sadly otherwise they are silent and MIA.

Forty-Niners fan by ErikSmith BayArea December 6, 2013