Placed into Gryphenwhore

You stand to the side and watch as one at a time a hat is placed on a students head for a moment before you hear the name of one of the houses being announced. You quickly realize this is the method of sorting the students, but you still have no idea what criteria are being used. Finally you hear your name called and you walk to the front of the room and feel everybody watching you as you sit and place the hat and your head as you had seen the previous students do, but then you hear a whisper.
"Hmmmm... yesssss you're quite the whore aren't you." you look around but can't tell where the voice is coming from "GryphenWhore for this one!" you hear loudly coming from above you when you realize it was coming from the hat, the hat decided which house you were placed in. What an odd place.

One of the instructors leads you away from the sorting hat towards a table of people wearing red, which you soon learn is the Gryphenwhores main color.

"Hi, I'm David, and this is Jenna" one of the other students calls out to you, "We are first years just like you! I'm so excited". The rest of the sorting finishes without any other new students being sorted into your house.

You're led to your housing area and are given a moment to put away your things when an adult man walks into your doorway.

"Hello, I'm Dr.Hein, one of your teachers. I'm just going around and introducing myself to all of the students." He says to you while looking at you in a way that makes you feel uncomfortable.

"What do you mean?"

"Well, I want you to pull out your dick and show me what you're working with"