He waited a moment after the boy settled into a fighting stance, but when there proved to be nothing more forthcoming after that he lifted off from the path to circle the park briefly once, both to make certain there was no one headed toward this park to interrupt and to gain a better position to knock the boy down out of the stance he'd taken.
He wanted more to happen before he ended this little game really, but if the boy still refused to respond in any entertaining way, he would just have to settle for what he'd gotten so far and leave it at that. It wasn't like it mattered much what the boy did really, the end result wasn't going to differ unless he lingered overlong and they were rudely interrupted before he could put a proper finish to it.