Tilda Swinton reckons the scariest thing about filming her latest movie was being pelted with rotten tomatoes in an unruly mob.
The actress plumbs the depths of grief and despair for her role as a mother whose son commits a school massacre in We Need to Talk about Kevin.
The film's arresting opening scene shows Tilda's character, a travel writer, in a sea of red goo and writhing bodies at the Tomatina festival in Spain.
Director Lynne Ramsay had the star plunge into the melee, in which tens of thousands converge on the town of Bunol for a messy food fight.
"It was really, really intense," Tilda said at the Cannes Film Festival, where the movie is an early favourite to take prizes. "It's not the kind of thing where you can say, 'We have to do it again'.
"Every time I see the images I can smell the mixture, not only rancid tomatoes and beer - but testosterone. It's just testosterone.”