A person who starts rooting for a sports team after never having interest in that team or even that sport in general because they're winning and everyone else is rooting for them
Bandwagoner: "Football is stupid" a few months later after the 49ers have made the playoffs... Bandwagoner: "Go 49ers"
by Pussyeater9000 January 23, 2012
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Suddenly giving a damn when a team gets good.
The dodgers suddenly look like a decent team, and Brooks jumped right on the bandwagon.
by Stephen Metrulas April 21, 2005
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A fan of a particular sports team who had no previous interest in the team until they began winning. They often will claim that they have been "a fan forever." You must discredit them on every statement they make.
Ever since the Anaheim Angels won the World Series their baseball park is full of phony-ass bandwagon fans. That's why I root for the Dodgers.
by Morgan1 June 16, 2005
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When one only likes or agrees with someone/something due to success. Even if said individual liked/agreed with something before they were successful, they "hopped on the bandwagon."

The most typical is the Yankees fan, many only like the Yankees due to success, however there are the few who were brought up that way.
Phillies Fan:"Yeah baby the Phillies in the World Series!"
Dodgers Fan:"Bandwagon asshole. The Dodgers have been in the playoffs almost every year and had no success, the Phillies get good out of nowhere and win the World Series."
P Fan:"Go bitch with the Mets Fan"
Mets Fan:"Haven't you put me through enough dick?"
by shcoome March 2, 2010
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In sports, someone who shamelessly cheers for a particular team not because he likes them or follows them faithfully, but only because that particular team is the "popular" choice or has been or is the top team in their specific sport recently. When that team which bandwagoners follow falls from grace, they gleefully jump on the next teams bandwagon and cheer for that team.
James Simmons is the BIGGEST bandwagoner in the history of bandwagoners because he likes every sports team know to man! How dumb.
by sox fanatic October 27, 2008
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When somebody puts up a facebook status, email or message of any kind and asks you either to send it on to others or repost it. Once you have done this you have successfully achieved bandwagonism! It is usually to spread awareness of some kind but actually does nothing whatsoever in order to help the cause. Only done by people with nothing more interesting to say and usually have no knowledge of the cause itself.
The NSPCC change your facebook profile picture to a cartoon for abused children campaign. Lots of people were guilty of bandwagonism.
by Sickoffacebook December 7, 2010
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when a person likes a trend, or sports team, just because it is getting more popular.
Mike: 12 months ago: dang son the hawks freakin suck.
Mike: 12 minutes ago: how bout them hawks?
John: BANDWAGON!
by SnookTheBe(a)sT December 14, 2008
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