The father of a dead friend, on the one hand, refers to the lack of fatherly love, and on the other hand, shows resentment towards his father;
Pat on the shoulder means encouragement, recognition and closeness. Combined with the analysis of the above sentence, the meaning of the dream is revealed: dad is really bad, never close to me, never encourages me, and regards me as an incurable defective product. If only he could be like someone else's father!