If you are 'over the moon', you are extremely happy about something.
My husband and I are expecting our first baby next summer – we're absolutely over the moon!
Sarah was over the moon when she found out she'd got the job.
If England win the World Cup, I'll be over the moon!
Don't confuse it with
If you describe someone as 'over the hill', it means you think they are old and unable to do something.
Mum's bought Granddad a smartphone for Christmas. To be honest, I think he's a bit over the hill for new technology like that.
The Duke and Duchess of Cambridge have announced that they are expecting their first baby. The royal baby will be third in line to the throne after Prince Charles and Prince William.