The Hot Water Challenge is when you dump hot boiling water on another person while they are sleeping.
It's an unthinkable act that has severe consequences for both of the people involved.
A child from Kentucky recently suffered second- and third-degree burns after his friend jokingly dumped the hot water on his friend during a sleepover.
The mother of the child that threw the water is facing charges because she did not seek medical attention for the little boy following the incident.
It's an awful challenge, so remember to warn your children not to attempt this is in any way.
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The viral hot water challenge has been circling the internet for about a year now. Here's one of the first challenges gone horribly wrong: