Feel violated but afraid to be a jerk?

So today at school we were allowed to wear clothes that weren't school uniform and so I did of course, and when I got into 6th period several very weird things happened. First one guy who never talks to me came up and started petting my head and talking about how nice I looked. Ten about a minute before the bell rang another guy who I rarely talk to came up and put his arm around me so I put my arm around him and he begin to say some things about how I'm a with a tight p**** and his huge c*** couldn't stay inside of me long enough to do anything and when I tried to pull away he just kept his arm locked around me until the bell rang. I told some of my friends and they think its funny and that id be wrong to tell anybody but I'm thinking it may just be because hes a really hot guy that they all like. And I do know I would be a jerk and a tattle tell if i told on him but I really was quite disturbed by it any suggestions to keep them away?