B97 is short for
Bjarne '97When you get really angry at your bike and toss it like
Bjarne Riis did in the Tour de France 1997.
On the final time trial stage everything went wrong and Bjarne had enough.
See the incident on youtube by searching for "Bjarne Riis 1997 bike toss"
This term can be used around friends that either know of Bjarne Riis or are into cycling, seeing as this is a very famous moment in the history of the race.
Sean checks his facebook and sees a
status update from Brian.
Brian: Just did a B97 on
my bike.
Sean instantly replies: Lol, dude... why did you go
Bjarne '97 on it? Was it worth it?