The area of our nervous system around the anus and genitals is highly sensitive in babyhood. So it may link with the self expression, the pleasure, and the feelings of deep connection the baby feels in this area. As it also links with the huge experience of learning self control, and how ones parents dealt with you going to the toilet, so it can also connect with holding on or letting go; control or relaxation; pleasure or guilt. This in turn could involve feelings of success or failure. Therefore it associates with your WILL. feeling punished and treated like a child, to feelings or arousal and sexual pleasure.
The anus also deals with what we get rid of that our body does not use. So it can link with the experiences or the attitudes that we want to or need to get rid of. These are the waste products of our life.
Excrement: The negative emotions and ideas we might not want to let go of; sometimes money; worry over something judged unclean; a cleansing or need for cleansing of inner feelings, such as guilt, inhibitions, resentments, hate, worry, or fear.
Idioms: Talking out of arse; pain in the arse; an arsehole; head up the arse; disappears up; all tits and arsehole – no ability to reason. See: excrement.
Useful questions are:
Does this in any way relate to childhood feelings, and if so what are they?
Is there any connection with sexual pleasure in the dream?
Is anything emerging from the anus, and if so what does it suggest I am discharging?