I still don't get it tbh...
Ok, there's basically 4 dorms at Hogwarts School of Magic:
Gryffindor - For heros, and people who are naturally awesome, and talented.
Hufflepuff - For loving people, and such. Generally fat people too.
Ravenclaw - For people who have no where else to go, I'd say.
Slytherin - For evil maniacs, basically.
Now, during your first year at hogwarts, you go into the mess hall, and everyone puts on a hat called 'The Sorting Hat'. This hat determines which dorm you'll be in. Basically, it chooses characteristics of your personality, and finds where you would fit in best.
I changed my nick to the 'in_charge_hat', an obvious pun off of 'The Sorting Hat'. And said 'Slytherin', because x9 is obviously an evil maniac, and that's where he belongs.
//hp nerdiness