500
Terrence, Will, Monika, Jamie, and Tory sit together at lunch. As a joke, every time Tory walks away from the lunch table, one of the other kids picks up her bookbag and moves it to the Main Office. Tory finally catches on after the third time the bookbag is moved. She gets upset after it happens again.
What is mean behavior? (This is NOT bullying. The behavior was intentional and it happened more than once, but it was not meant to be hurtful. Tory's belongings were not damaged or destroyed as a result of her classmate's behavior.)