Because at this very moment, I don't want to live with him anymore 
He's nasty, rude, ignorent, violent - earlier he shouted "you fucking wanker" at the top of his voice in the garden whilst the neighbours were outside. He's constantly telling his brother to piss off or fuck off depending on his mood. His favourite words are faggit, gayboy, retard, dickhead etc
Yesterday he got sent to bed early for swearing. He sat defiant on the living room floor saying "make me" when told to go to bed. He then started saying "what you gonna do? you can't make me do anything, I'm going to sit here all night". This particular day I'd spent around £40 on him on a day out as a treat. I got so angry with him I shouted at him to get out of my sight. Tonight has been the same, sent to bed early for swearing so he's just been down here throwing my papers around and basically being horrible. I've just told him he should maybe think about living with his dad. He thinks I don't mean it but to be honest, I really do 