Bono was playing a U2 concert in Glasgow recently, when he asked the audience for total quiet.
Then in the silence, he started to slowly clap his hands, once every few seconds.
Holding the audience in total silence, he said into the microphone, "Every time I clap my hands, a child in Africa dies."
A Glaswegian voice rang out from near the front of the crowd, piercing the silence........
"Well, fuckin' stop doing it then!"