My 22 mo son hits (with a balled up fist) and kicks when angry, frustrated, and tired. My son also will hit and kick my DD if she is sitting on my lap or laying next to me on the bed. I have tried teaching him gentle and showing him what gentle is. I have tried stopping the hitting/kicking action in mid-air very calmly telling him gentle and no hit. DH has even tried replacing the aggressive behavior by turning it into a game of giving high five. It isn't stopping, if anything it is getting more frequent. For all of these behaviors when we try to redirect he laughs and does it more. Today I even resorted to removing him from people and putting him in his playroom but I hate doing this. My biggest worry now is, well besides hitting his sister, I am pg with another child. I am worried about his reaction to this new baby and I am wanting to stop this behavior before the birth. HELP!!!!!!!!!