Because Albus is sensitive, but also awesome.
The Slytherin had his wand out, but Albus was hesitant to draw his.
"So if your father's 'The Boy who Lived,' what does that make you, idiot? 'The Boy who Nobody Cared About?' 'The Boy who had Messy Hair?' And your sister? 'She's The Girl who's Snogged Every Guy in School?'"
Finally, Albus whipped out his wand, swiped it through the air before the Slytherin even reacted, and shouted, "Stupefy!"
Albus examined the Slytherin's face carefully. He despised using magic against people, but nobody insulted his family.
"No, I think that would make me 'The Boy who Kicked Your Butt.'"
Let's just say I'm keeping this K... :)
~writergal24