There are moments in your life in which you will be encouraged to be dishonest and there are moments when you will experience what it feels like for someone to be dishonest to you. This is unfortunate but it is just the truth and something you will have to accept at some point in your life before things get too hard for you. A dream that involves dishonesty could cause the dreamer to be hurt by it or questioning why this dream is appearing to them, but there is a definite reason and it need not be so bad.
If you have a dream about dishonesty then this could possibly be related to the dish dream above. Maybe the reason you are having dreams about dirty dishes is because you have been dishonest recently and you feel like it is contributing negatively to your view of yourself. If you have a dream in which someone else is being dishonest to you then this also means that you have trust issues and that you need to try to trust people more often. Sometimes being lied to is better than losing all faith in someone, because losing faith in one person can cause you to lose faith in another, and then another until you feel like a hollow shell that can never trust again.
To dream that you are the dishonest one means that you are worried about the way you are presenting yourself and how you are carrying yourself around others. You want to gain their favor but you also don't want to seem uncool. In the end, anyone that would encourage you to be dishonest to win their favor is someone that you should not be spending time with. Be your own man or woman.