When an individual cheers for a team when they're in the playoffs, but doesn't actually watch the games, even when they get the low budget cable station the game is being televised on.
What the bandwagon says happened: "Dude, that game last night was incredible! Boston totally outplayed Chicago! Go Bruins!!!"
What actually happened: The bandwagon watched a few minutes of the game and then fell asleep only to wake up the next morning, check their phone and find out that Boston won in overtime.