They are being rude on purpose. Don't let them stand in your way! You're smarter, stronger, kinder, and better than them! He/she needs to cool it before I lecture them about how to be a decent civilized human being. And believe me, I will write paragraphs, PARAGRAPHS, about how not to be a jerk! If they dare do this again, tell me, and I will give them a taste of their own bitter medicine!