S.T.
it's not uncommon for a kid teetering on the edge of adulthood to rebel, to decide you're not the boss of him, to push back.
it's a good thing in many ways. not fun for you, for sure. but you don't want a pliant do-whatever-he's told squishball of a young adult, do you?
so think less about how to 'discipline' him (there's not much you can do at this point but kick him out or take away big privileges like driving, which will probably be short-term effective but won't do a danged thing for your relationship going forward) than how to work with him. turn this defiance to your advantage. talk to him about being an adult- not in a lecture-y way but in a 'let's share information' sort of way. be honest with him. tell him about struggles YOU had as a young adult, about things you wish you'd done differently, about things you admire about him, about strengths you are proud of and that you think will serve him well. empathize with him about the eye-rolling ugh of having to do chores when you don't feel like it. (don't pound on him about alllllll the things you do- not the right time.) ask him to help you find solutions. what does he think will work when it comes to the trash? what does he think are reasonable rules for curfew? what does he think his sister gets away with that he doesn't or didn't?
you don't have to take all of his suggestions, or any of them. but nothing draws a teenager in like being heard and understood.
maybe that's what he's getting at his grandma's.
you have very little time to forge a new relationship with your almost-adult son. if you spend it all trying to discipline him you'll blow it.
khairete
S.