As the country waits for news of the Prime Minister's baby, the TAB says it would have been keen to take bets on the first child's name, birth date and sex.
But, by law, it's not allowed to.
Spokesman Mark Stafford says the TAB can only take bets on sporting events where the outcome is unknown.
There's also the risk of people with inside knowledge skewing the book, he says.
For what it's worth, Stafford thinks the baby will be a girl, will arrive three days late - and he's picking a distinctive new-age name such as Sky, Ocean or Coral.
