Ask Warwick: Why does Samson wear a Birthday Party t-shirt?

From the very first draft of the script, Samson put on a t-shirt from the band Birthday Party when he gets dressed to go and see Delilah. In pre-production, the costumer Heather Wallace made a t-shirt to Warwick's specifications -- one that he remembered having as a teenager. It was only then that Warwick told us the story of that t-shirt.