A dream with urine can represent how you control your emotions. The dream can suggest that you have built up emotions within, or you give in to them too easily.
To be urinating in a dream suggests that you are releasing built up emotions or you lack control in some aspect of your waking life. If you are holding in your urine or you wet yourself then it implies that you have a strong desire to release your built up emotions or you are about to have an emotional outburst.
If you are being urinated on then it implies that someone or something in your life is causing you burden or someone tends to bring all their emotional problems to you. Alternatively, the dream can suggest that you feel undervalued in some area of your life.
If you urinate in the street or out in public then it implies that you have privacy concerns or you are feeling territorial or creating boundaries in some aspect of your waking life.