The actor had co-stars including Kate Winslet doubled-up in laughter after pulling the prank during a tricky scene - but she insists it actually helped the shoot.
Winslet says, "There was one scene where we were having dinner together.
"It was a difficult scene and that's when Johnny did one of the most triumphant things I have ever seen an actor do - he had a fart machine under the table."
"The first take was priceless and nobody wanted to speak. But then it happened again and we were bursting.
"That was the thing that made the scene work. That was down to Johnny."19/10/2004 14:01