Carpe Jugulum (Discworld, #23; Witches, #6)

by Terry Pratchett

Magrat relaxed a little. “She said her first word this morning,” she said, looking proud. “What, at fourteen days?” said Nanny doubtfully. “Yes. It was ‘blup.’” “Blup?” “Yes. It was . . . more of a bubble than a word, I suppose.”