It's the Queen

The two O'Briens stood on the Mall in London, among thousands of flag-waving people. Not being sure what was going on, they asked a bystander. 'Is there something special happening?' 'Indeed,' remarked the man.

'It's a royal wedding.' Just then there was a fanfare of trumpets from the gates of Buckingham Palace. 'What's that?' said Pat O'Brien.

'That's Her Majesty the Queen,' said the bystander.

'By God,' said Pat. 'She can play that trumpet!'