The greatest live entertainers have a connection with their audience which makes everyone in their company feel like a house guest rather than a paying customer. But that doesn't necessarily mean that everyone in that audience is house-trained.
Four songs into her second Summer Carnival show at BST Hyde Park, during Just Like A Pill, Pink picks up a small plastic bag thrown at her feet, quickly inspects it, and then stares open-mouthed at the only person in the 65,000-capacity crowd who knows exactly what she's holding.
"This is your mom?" she asks, incredulously. "I don't know how I feel about this."
