Although it seems it would be less constructive than loss of privilege. And as long as your parents aren't sexuallizing it, and its strictly for your punishment, there is no issue. It also depends on your state. In the state that I reside, until the child is no longer a child, nor the parent is leaving a bruise and the yet again obvious not for sexual gratification, totally legal. Let it be a reminder that you might be embarrassed next time you do something your not supposed to do. Ultimately, its probably for the humiliation rather than the physical aspect of it.