Towards the end of the 19th century the Prince Regent was hosting a dinner party, sat at the opposite end of the table was his mistress Mrs Langtry.
The gentlemen were rather stuffily discussing the latest defence costs (expansion of the Navy, dreadnoughts etc). The chat was silenced as the Royal announced down the table,
"Why Mrs Langtry, do you know that I have spent enough on you to buy a battleship?"
Quick as a flash she responded with,
"Well your Royal Highness, you have spent enough inside me to float it."
What a woman!