At a recent U2 concert in Glasgow, Scotland, Bono asked the audience for total quiet.
Then, in the silence, he started to slowly clap his hands, once every few seconds.
Bono held the audience in total silence, and then he said into the microphone...
..."Every time I clap my hands, a child in Africa dies."
Then a voice with a broad Scottish accent from the front of the crowd pierced the quiet...
..."Well, foockin stop doin' it then, ya evil bastard!"
