Did Kate mean D for daughter, or for her dog?
Sources close to Kate Middleton insisted that she could not have given away the sex of her unborn child in an unguarded comment because she has chosen not to be told whether she is having a boy or a girl.
It added further intrigue to the fact that the royal told a well-wisher on Tuesday she would give a teddy bear gift to her "d ... ", with many people taking to social networking sites to speculate that she was about to say she would give it to her dog.
Middleton (31) lavishes attention on Lupo, and one Twitter user said the Duchess had the black spaniel in mind, saying she "was going to give it to her DOG as a chew toy, but didn't want to sound rude".
Whatever the truth, bookmakers slashed the odds on the duchess having a girl to 1-2 on, with a boy coming in at 6-4.