Prince Charles goes to the zoo, wearing his favourite coat and a big fluffy orange hat.
One of the park keepers wanders up to him and says "Er, aren't you Prince Charles?"
"Indeed I am," replies HRH.
"Ah, well, excuse me for saying, sir, but what are you wearing on your head?"
"Well," begins the Prince. "One was speaking to the Queen earlier, and one said 'Mother, one is off to see Twycross zoo today. Would you like to come?', and she replied, 'Twycross zoo? Wear the fox hat.'"
*duck*and*run*for*cover*
V.