I'm sorry I missed this until now. Here's a hug for you, if you still need it. Don't let him walk all over you, you're the big sister, you're supposed to be the bossy one that no one pushes around (says a fellow big sister).

I have to say though that you are lucky to have him, pain in the butt or not. I had 2 younger brothers, one died 20 years ago and one went to jail on a few occassions and I no longer have any contact with him.

Hopefully you can work something out where he is more respectful to you.