My son is 4 and he saw these 2 little girls playing in their pool. He went over to play with them and they said he couldn't play so he came back over crying. I went out and bought him one. He was playing in his pool and the girls came over. I told him to tell them they cant play in his pool and to go away. I encouraged him to be mean because they were mean to him. I know it was wrong but I was mad they hurt his feelings.