Bandwagon fan

[Britney]

Anyone who claims they are a fan of a particular sports team, even though they had no prior support for/interest in the team until that team started winning. These types of fans only show playoff interest, have probably never watched a regular season game, dont own any type of team merchandise, nor would they buy any.

[Tina]

Anyone who became a Miami Heat fan in 2010-2011

[PussyCat]

Someone who becam a fan of the Boston Redsox after the 2004 world series.

[Little_Girl]

Switches support to whatever team/game/allegiance/belief happens to be successful at the time

[Becky]

Whenever a regions sports team suddenly gets really good really quickly, everyone and their fucking dog either buys a sports jersey or takes their old one out of the closet where its been for 20 years, proclaiming they are a diehard fan. Bandwagon fans usually flock to their teams games in large numbers and usually constitute 80% of that teams fanbase. See Florida Gators.

[Rihanna]

All New York Yankee fans.

[Britney]

Most common in sports, a bandwagon fan is a fan of a team simply because they are the reigning champions/have the most championships/doing the best at the moment. The second these fans notice that theyre team is starting to do poorly, theyll jump ship and hop on the bandwagon of a different team that is doing well. As a result, they will have little to no knowledge of their current team and the true fans of said team will hate them for it.
Bandwagon fans are typically fans of the New York Yankees, Boston Red Sox, Dallas Cowboys, New England Patriots, Miami Heat, Los Angeles Lakers, Duke basketball, and Alabama football.

[Sonia]

a pittsburgh sports fan.

[Donald Trump]

Someone who is currently a Packers fan, Heat fan, and Yankees fan but doesnt live in any of the areas those teams represent. They tend to only watch ESPN highlights and can only name the 3 best players on any of their teams.