I overheard this earlier today. A (supposedly intelligent) woman had got two new kittens, and took them to the vet to be neutered. She later phoned the practice to see how the kittens were doing. The receptionist asked for a name, so she gave her the kitten's names. No, the receptionist explained, she meant what surname. The reply was she did not know the surname of her new kittens as she had never asked.