Any Yankee fans or Patriot fans who don't watch the games, yet proclaim they are fans of that team.
I fucking hate those frontrunner Yankee fans.
by Soko May 28, 2005
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a fat/overweight/obese girl who is in the front of a group of girls going to a party
Dave: John, look it's a frontrunner! (pointing to the fat girl leading the pack)

John: Frontrunner!!
by chuzzle7 April 13, 2011
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When someone roots for the best team in a particular sport
by Jxbbdisnsbdysu August 12, 2022
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