Bandwagon
Gen Z SlangDefinition
Joining or supporting something just because it’s popular, without genuine interest or loyalty; the trend-driven herd mentality.
Examples
"She didn’t know a single player yesterday, but now she’s on the bandwagon because the team is trending."
"He’s such a bandwagon fan, switching brands the second they go viral."
"Don’t hop on the bandwagon just because your group chat is hyping it; try it if you actually like it."