This guy at work is really beginning to get on my nerves. I mentioned him once before. He banged on my desk and told me to "wake up" when I was in the middle of trying to think through a problem with a monthly billing that I do. Then he started singing "Wake up, Sleepyhead!" I slammed my hand down and said in a stern voice, "I am NOT sleeping!" I know it was meant as a joke, but he completely broke my train of thought and I didn't think it was very funny to accuse me of sleeping on the job in front of all my co-workers. Well, he did something similar again yesterday. I was looking over a lease to make sure everything was okay with it before sending it to the leasing company. While I'm doing this, he walks past my desk...but stops to bang on it very loudly several times with his pen. My mom says that when people do stuff like this, I have to just "go with the flow", "loosen up", and "joke along with it". I'm sorry, but I fail to see what is so funny about this guy constantly doing disruptive and distracting things at my desk when I'm trying to do stuff that's important. And I also don't appreciate him giving me a reputation as a "sleepyhead". Rumors like that can spread like wildfire in the workplace! I really don't know what to do..