Constantly. There may be a break from his relentless meanness if she is doing something for him/with him he wants/ a rare moment,but for the most part she cannot do or say anything without him commenting. Most things she says or does is met with ridicule or questioning. He’s impatient and critical, takes the mickey out of her. I tell him to stop and he keeps doing it. I tell him to stop again and he says he’s doing nothing. Sometimes he flat out says no when I say don’t do it. I’ve tried ignoring it and disciplining. Tonight it came to my head and DH lost it big time. I know it is effecting DD. She’s always trying to please him and she’s so sweet,always defending him even when’s he being horrid to her. DS is a great kid when he’s not being like this.I know teen years are hard and his hormones are all over but I don’t think it can justify bullying your sister or being rude to adults (other problem we’ve had re school) It’s almost like if he’s good at home his school behaviour deteriorates and vice versa. His sisters are half sisters and he has never known his bio dad and over the years I wondered how this might manifest and if this is partly to do with that..my DH has been there for him since he was a baby and treats them the same. DH is Dad.Should I talk to him about this? He doesn’t talk to me about his bio dad though I’ve said over the years if he ever wanted to ask me anything he could..maybe I’m just looking for excuses for why he’s acting up. .I’m just at a loss really.