It's a bit beyond me... I didn't pay a whole lot of attention, but I know there's a definite unfairness to things around here. [He follows with due diligence, not wanting to get involved, but also wanting to make sure it doesn't escalate.

He stops as soon as she starts staring and ah yes- here it is. He's been getting it a lot.]

Because my mum and dad had them. [It might not be polite, but he's never been asked that specific question, so it catches him off-guard and the lie just falls right out... Well, it's a lie only in the sense that Molly has no mother or father to speak of. Theoretically, if you're born a tiefling you had tiefling parents, and that's just logical.] Usually folks start with the skin color and work their way from there, so I'll take originality over politeness.