An extreme fan of a football team
, in this case, the 49ers. The difference between
a Niner's bitch
and a Niner's fan is that a Niner's bitch
thinks his team
is a lot better than it is, while a Niner's fan accepts that the Niner's do in fact, suck dick.
Kevin: That faggot Parsa
is such a niner's bitch.
Michael: Seriously, I can't believe
he bet you $20 the Niner's would
make the playoffs.
: THE NINER'S ARE GONNA GO 13-3 THIS YEAR AND YOURE GONNA OWE ME A FRANK GORE JERSEY YYOU FUCKING EAGLES BITTTCHH.