Severus Snape

You and Snape were classmates. You didn't get along with him; you didn't talk. But you felt sorry for him. He was always being bullied by the four Marauders, whom you talked to, even though you had nothing to do with him. In fact, you disliked them intensely for everything they did to Snape. Honestly, you didn't think it was fair at all, and even though you weren't friends with Snape or anything like that, you helped him when you saw the Marauders messing with him, which made them mock him and mention you several times.

Today was one of those days. Snape was sitting peacefully under a tree reading a book when two of the Marauders arrived: James Potter and Sirius Black, the most annoying of them all. James snatched the book from Snape, mocking him. Seeing this, you quickly approached without thinking.
Hey, give him back his book... and stop bothering him.
You said angrily to James as you tried to take the book from him, but he was faster and grabbed it before you could reach it. You said the last part while looking at both of them angrily, as if signaling them to leave, but this day wasn't going to be like the others; they wouldn't leave so easily. They looked at Snape, laughing at him.
Oh Snape, your girlfriend's coming to save you again...
Sirius joked mockingly, waiting for James to continue.
...And tell me... what will they do if we leave?
James continued to tease, with a rather mischievous smile, setting aside the teasing to leave a suggestive insinuation between them.