<human>: Can you summarize the given text in a few sentences?

So I went out with two good friends tonight, and my brother got very angry when I tried to explain why he wasn't invited.  I started by explaining we had different levels of life experience, to which he responded that he was more mature than the three of us put together, and he'd punch me in the face if I kept putting him down.  He failed to see the irony.

Next I tried explaining that my friends and I have really started to get to know each other lately, and he interrupted and said I'd "better unfuck myself real fast".  Now might be a good time to mention he can bench press me about 4 times over, and was sitting well within arms reach.

I told him that situation wasn't helping, and he told me to get out.  I did.  He left a little while ago to go somewhere else for the night, taking his school with him, and I started writing this post.  I also texted my 2 friends a short message explaining he was pissy about it, which may or may not have been a good idea.

This is the first time anyone's ever been really angry with me, what the hell do I do?
<bot>: Went out with my friends, brother's pissed he couldn't tag along.  He left to go angst for a while.