My local MP was kind enough to organise a visit of parliament. He mentioned an amusing annecdote. The tradition still is that when the Queen visits parliament, a senior MP is held hostage in Buckingham. He was chosen on one occurence and was waiting in a drawing room of the palace, in the company of a General. To make the conversation, he asked the general "what if something were to happen to her Majesty?". The general smiled and replied "don't worry, it will be very quick".

This might require further explanation for those not familiar with dry British humour ;)