“Prince Philip’s favourite joke [was] about the American tourist who asked why they built Windsor Castle so close to Heathrow.”
 
Nigel Cawthorne, I Know I am Rude: Prince Philip’s Brilliant Gaffes on Himself, the Queen, and Others

“People think there’s a rigid class system here, but dukes have even been known to marry chorus girls. Some have even married Americans.”
 
Prince Philip, Duke of Edinburgh, The Wicked Wit of Prince Philip