I don’t want to be a bandwagon fan

This malaphor is a mash up of “fair-weather fan” (someone who supports a team only when it is winning) and “jump on the bandwagon” (joining something only when it is popular).  It is a congruent conflation as both phrases concern a person who is being supportive of something or someone only because it is the popular thing to do.   This malaphor has evolved into an accepted phrase, apparently, as it can be found in Urban Dictionary and has been used by several people (e.g., Cuba Gooding Jr.).  Thanks to Katie Hatfield for uttering this one unintentionally and then recognizing it as malaphor worthy.

http://www.tmz.com/2014/06/12/cuba-gooding-jr-i-hate-bandwagon-fans-and-l-a-is-packed-with-em/