This sort of joke always goes wrong

Every year, it seems, some radio station will announce a secret surprise show by a cool band as their April Fool's gag.

Every year, it goes terribly wrong as too many people turn up and it all gets a bit ugly.

This year, learning the lesson of forgotten recent history: Rock FM in Auckland, who were surprised when people started canceling work and booking flights for a 'surprise acoustic Foo Fighters gig'.