Very often people who have a physical need to go to toilet during their sleep dream about the toilet, because they simply want it. The toilet could also be interpreted as the place you get rid of the negativities in your waking life. The toilet is the symbol of your patience that is going away. You are no longer able to cope with some things, but only if the toilet is overflowing. If you are unable to flush the toilet in your dream, this means that you are trying very hard to finish some part of your life, but the circumstances doesnt let you to do it. If you dropped something in the toilet and it drowned, it means that due to your silliness you will lose important things or people in your life.
Read more about dreaming of Toilet in other dream meanings interpretations.