James Malcolm, who's from New Zealand, claims he didn't know it was Nick Cave and asked his followers on Twitter who the celebrity was.
In fact, he was so keen, he posted two pictures of the iconic Bad Seeds musician after seeing other people approach the rock icon.
He says he asked for a photograph with the star so he didn't miss out.
The picture has been shared on Twitter more than 2,900 times and yes, he now knows who the man is.
James is a stand up comedian and has been nominated for awards in New Zealand, so this may be his most successful joke yet.
