At a U2 concert in Ireland, Bono asks the audience for some quiet.
Then he starts to slowly clap his hands.
Holding the audience in total silence, he says into the microphone....."I want you to think about something. Every time I clap my hands, a child dies in Africa."
A voice from the back of the audience yells out........"Then fookin stop clapping yer hands, ya arsehole!"