There are three parrots on a perch in a petshop.
A man comes in and asks how much the first one is.
'£100,' says the shopkeeper.
'What does it do?'
'It quotes Shakespeare,' says the shopkeeper.
'How much is the next one?' asks the man.
'Why so much?' the man asks.
'It can squawk Bach, Beethoven and the whole classical repertoire,' says the shopkeeper.
'What about the last one?'
'Bloody Hell. What can it do?' asks the man.
'No idea,' says the shopkeeper, 'but the other parrots call him "maestro".'