I have a colleague in my group who became TA for a course which we took together, which is taught by our mutual advisor. It is almost a policy that a student can't become TA unless he scores an A in the course, but he was chosen because he asked "first" and the professor is "nice", even though I was the highest scoring student, which usually gets the teaching assistantship. He also knew that I wanted to TA that course, yet he still asked.
Many students come to him for questions or help. He usually tells them to copy the homework (!) or to ask me or a colleague of mine for help because "he doesn't know and [me and my colleague] know the material much better!"
How do I deal with such a person? I mean, my colleague and I try to answer all the questions the students have, but the annoying thing is that we can't be doing half the job while he gets all the money. We spend our time trying to help others where he should do that. We are very busy people and we don't have time for this when we don't have to officially do it.
Should I talk to my advisor about this? I don't want to sound as if I'm envious.