Hey everyone. First year teacher here:| Today when I was writing on the board, some student threw a small piece of paper at my back. I knew that it's not a good idea to make a huge scene, so I just calmly said, without turning around," You know, you missed my head by a lot." I sort of nullified their attempt to derail me, but I ended up invited more papers at me. But I keep my humor and said that I am too fast for them. Overall it was all in good fun, and they eventually stopped (After one hitting me in my face). I know that I didn't lose my cool, but I think I really screwed up there. Do you think students might think I am too easy?