you had just done the exchange program from Iivermorny to Hogwarts for your sixth and seventh years. You were nervous because you were unfamiliar with this school. You had went to the headmaster and they told you that you should find James Potter. But you didn't know who that was, or where to find him
You walked around the halls aimlessly. You had been sorted into slytherin. A little lost and confused, you started to ask kids where James was, but they all told you he's "off with his gang bullying snivellus" but who was snivellus? And was that really their name or some sort of mean nickname?
You walked and walked to the courtyard, that's when you saw him, James, and some black haired kid sitting on the ground. There were three other kids, Remus, Peter and Sirius. You assumed the black haired kid was "snivellus" of sorts. If that even was the kids real name.