Lol, on the day of my Freshman orientation I made fun of my senior leaders or whatever. In PE that year, when we were playing soccer, one of the huge football dudes grabbed me and threw me off the ball, I tackled him back and passed the ball to my teammate.
People are mean to freshman because they are intimidated and spineless for the most part. Just teach people not to mess with you and they will back off and give you some respect.