The We Can't Stop hitmaker made a bet with the beatmaker that her single Wrecking Ball would hit number one on America's Billboard Hot 100 chart - and she was right.
The prize for winning was a Numi toilet, a state-of-the-art lavatory which is controlled by Bluetooth, has a heated seat, deodorises and even plays music.
Cyrus says, "Contrary to what he thinks, Dr. Luke isn't always right. I bet him that Wrecking Ball would go to No. 1 on the Billboard Hot 100, and it did. Now he has to buy me a $10,000 toilet. I'll be thinking of him every time I go."