A very close friend of mine has a 11 year old son who never shuts up and torments his mother endlessly. She has medical problems and he intentionally tries to irritate her especially when she is in pain like he enjoys making her miserable. He goes as far as punching her in the arm when she has abdominal pain from stomach problems and thinks its funny. When he talks sometimes he is reciting stupid rap lyrics and other times he just talks gibberish I think to hear his own voice. He is angry, doesn't listen is totally disrespectful, cuts her down in front of her friends by telling her she is stupid, he makes rude jokes even threatens to tell lies to her friends to cause her problems when he doesn't get his way. Last night was the finally when she was trying to correct him he told her screw you I hate you and then threw a coffee cup which hit her in the eye. Usually later he apologizes and says he loves her then a few hours later it all starts over again like he wasn't the least bit sorry about it. What the hell could possibly be wrong with this kid? She has tried normal disciplining by warning him first then taking away things he likes and she has gone as far as taking away everything he likes so he has nothing to do and is consistent when she does it and he still keeps it up. I'm afraid since he doesn't respect her she will soon be in physical danger due to what happened last night. Any advise would be greatly appreciated. Thanks in advance.