My concoction—the greatest Florida Marlins nickname ever. A breakdown:
Miami—the team plays in Miami.
Vicenarian—a twenty-something. The youthful team is full of ‘em. Almost entirely, really.
...In addition, you get “Miami Vice” between the two words, a slightly clever bit of punning.
In conclusion, it’s the greatest nickname ever, and should be used by everyone, at all times.