Tommy cooper Joke

You know Al Jolson. He never needed a microphone. He used to sing and dance at the same time in these massive theatres, five or six thousand people. Hours at a time...

if he saw a microphone, hed say - I don't need that. I'm Al Jolson!!

And you know...wherever Al performed, you could hear a pin drop.....just a single voice filling the theatre shouting...speak up mate! we can't hear you!!