Etiquette question: I rode Blue and Yellow this evening. There were few people on trail. About 3/4 the way onto Yellow, I came up behind a rider going slower than me. I stuck behind the rider through several turns expecting that he would realize I was right behind him. I noticed he had earbuds on. Finally, once there was some passing room I announced "on your left". There was no reaction. I waited for the next opportunity, then said it louder expecting that he could not hear me making the request. Still no reaction. A couple of strides later, I said it even louder. He replied in a *beep* off tone "alright already, give me a chance". I appologized and told him that I had no idea if he could hear me with his earbuds. I appologized several times, in fact before pulling away from him. Problem is, he then rode on my ass for the next stretch. I finally asked whether he wanted to pass & he said no. I had no clue if he was just being a *beep* or wanted to use me to pace him. If the later, I would have expected him to say that he like my pace. I finally pulled away from him riding a much faster pace. He had on all his team wear and obviously was into riding. This was the first time I ever came across such an incident. I always make my presence known as I ride up behind other riders, and am always considerate enough to watch behind me for faster riders. I've been riding for many years and am very considerate of others as I regard most riders as decent, respectful and fun people. Was I in the wrong, and what should I have done different particularly since he had earbuds?