Final answer:
The provided reference does not contain a quote from the scene in "Where Are You Going, Where Have You Been?" where a boy with shaggy black hair wags his finger at Connie. This reference is not from the story, and the actual content of their interaction is not quoted.
Step-by-step explanation:
The question refers to a scene from the short story "Where Are You Going, Where Have You Been?" However, the provided text does not align with the story's content. In the story by Joyce Carol Oates, the scene where a boy with shaggy black hair wags his finger at Connie leads to an ominous interaction, but the exact dialogue is not given in the provided reference. The character who wags his finger and eventually reveals himself as Arnold Friend initiates a conversation with Connie that is both threatening and filled with psychological manipulation. Without the specific dialogue from the original text, we are unable to provide the exact quote.