Yet another logic problem

I am working metal detector crowd control one morning. I direct students to the right of me, forming a single-file line going up the stairs to the metal detector.

A kid skips in line, briskly, to my left. Some other kids notice this, but I am A) too tired to go get him, B) unwilling to abandon my post and let other kids get out of line, and C) uncaring about line etiquette on a grand scale.

So I solve the problem by turning to the few kids who saw this and, with a smile and faux-exasperated shake of the head, saying: "WTF?"

A student in line, Katrina, responds: "Hey! Don't talk about my brother like that!"

And I counter: "Well, he broke the rules. Tell him."

And she: "Pfft, right, like I'm going to talk to my ugly brother!"


...touche?