ABYMUG472 - DEATH NOTE - TAZZA Mug 320 ml L & rules

Do you know the secrete rule of this Death Note mug?
"If the human using this mug does not drink his hot beverage in the next 6 minutes and 40 seconds, his drink will get colder."

- Standard size (320 ml).
- High quality printing process. Dishwasher safe.
- Micro-wave safe.
- Material ceramic.
- Packaging: PVC box.