A person who bandwagons a team during the playoffs, but can't be found during the regular season, and definitely can't be found once the team loses. This individual will become quite unbearable in the face of victory as they join in the collective camaraderie of real fans and proclaim that they "always knew" or "good things come to those who wait" or any other cliché that their monkey brain can churn out...
In preparation, they will purchase several pieces of clothing to rep (hat, hoodie, retro jersey, etc.) from Fanatics and will get that overnight shipping because they're that desperate.
The worse thing is that they will repeat the same process the next year with a different team, unless they're exposed...so...EXPOSE THEM PLZ!!!
Acquaintance: Did you see Carter rocking that Mutombo jersey?
Me: Yup, he wasn't wearing that a few months ago.
Acquaintance: What a pussy!
Me: A playoff pussy...