Babyhood entails being frivolous, irresponsible and making mistakes from a sense of lack of control. Diapers in dreams represent this lack of control as well as feelings of immaturity and childishness.
We understand that when you were a baby, you had no control and have all your needs provided for. When the diaper is wet or dirty it delivers a message to the unconscious brain that it can put its victory on hold because time isn’t on your side anymore.
Diapers in dreams symbolize diapering, infantile behavior, high anxiety or the need to be taken care of – worthless incompetent. The interpretation could be dependent on who the dreamer is in real life – either what they needed emotionally or what they judged others secondarily desired when we have this “playtime” scenario.