DS is 8 and within the last few months has become really pretty rude.
He was always lovely - quiet and thoughtful and considerate, and he still is - to other people. I on the other hand get told to 'shut up, stop going on' - yesterday things got a bit heated over clothes on the bannister of all things and he hurled them downstairs at me.
He's had a lot to cope with - new sibling and he was an only child for seven years so it's bound to be a big transition but I've tried the lovey understanding stuff and I think he is getting worse 
AIBU to get tough with him? I don't mind forgotten stuff, mess, dirt, noise, but I absolutely hate rudeness.