Final answer:
The question relates to a form of play that looks aggressive but isn't meant to harm, which is called mock play.
Step-by-step explanation:
The student's question refers to a type of behavior in play that involves physical activity resembling aggression, but which is not meant to cause harm. Such behavior is known as mock play. Despite the semblance of aggression, it is generally understood that mock play is a way of practicing social and physical skills, is consensual, and is distinguished by the lack of intent to harm. This is in contrast to true aggression, which is behavior intended to inflict harm or pain, such as in acts of bullying or instrumental aggression (like a hired assassin).