In ancient times the power of the person was said to be contained in his excrement. Now, dreaming of it is more likely to indicate a sense of relief, a letting go of old beliefs. Dreams of excrement suggest that there are certain aspects of our lives which we have used up and need to expel. Large quantities of excrement indicate that we may be feeling overwhelmed. When we dream of faeces or excrement we are returning to an infant level of expression and pleasure in bodily functions. Experiences we have had may have been relevant at the time but we now need to let them go. More negatively, we may feel that we have to process other peoples negativity. You might like to consult the entries for Excrement in Body and for Toilet.