Same thing happened to me, got paper thrown at my head and heard laughter behind me. but when I turned around they acted like nothing was wrong .which was technically correct but I was stressed and threw it at his shoulder if that wasn't bad enough, i crush on him. He asked what was wrong the next day and I told him stressed.he said he was watching the office and a funny scene came up so that's why he laughed. Shit.
After class when I was walking home with my friends, I saw this one guy's reflection from a mirror, he was pretending to kick me off, then his group of friends laughed. That's not a direct bullying thobut still making me upset. I have tried to be neutral and not having problem with anyone tho. I'm just that classmate who's active in discussion. I cant believe even a plain potato like myself got a hater. I know I'm being too sensitive lol.