You're 17. Get emancipated and live on your own legally. It's really quite easy and requires no parental permission, at least in our farming county in Illinois.

Anyway, about the beer. Say you found a 6 pack in the woods and you took it. And then say you drank half and took the rest home for later.

And I'm serious when I say this: For as long as you live with your mom, don't do anything she won't like. She essentially owns you. This means dispose of everything you aren't supposed to have, goto school, follow her shitty communist rules, etcetera. It's the only way you'll get out of there without more trouble. She sounds like a total bitch who's out to get you for your every wrong move.