If you qualify as your parents' dependent, it sounds like you should have given them a shot at it. Of course, if you are entitled to receive a $1200 stimulus check you may be out of that if they claim you as their dependent. However, if they are supporting you financially you are getting a lot of money from them anyway. You could talk with them about it and may want to consider honoring their request. If you already filed, you could consider filing an amended return not claiming yourself. There is a place on your return asking if you qualify as someone else's dependent. Talk with your parents about it and come to an agreement.
