i think my friend thinks i'm going to kill him?

Threatening to rape your friend's sister is not normal, I am surprised he didn't push you over or take a swing at you.

First things first. Please take a step back, and breath. Remember and reassure your friend that what you said and/or did, you didn't truly mean. People can say the craziest things when enraged, and tend to have impulsive behaviors.

I'm not saying seek professional help immediately, but if your anger and impulsive actions increase, I would highly advise it. Just step away from the situation, recollect yourself, and then explain and apologize to your friend that you didn't mean a word of what you said. I

If you two have been friends for some time, he should understand, but if he runs off and tells everyone you're a loon; then he's truly not your friend. I have told my friend my feelings, from anxiety to anger, and he didn't become scared of me one bit, he just learned more about how I'm suffering from an mental disorder. So reassurance is key when an outburst of anger and impulsive behavior occurs.

Give yourself time to cool down, and let your friend cool down as well. Then explain and apologize as stated earlier.

Hope this helps you!

You screwed up. And on top of that you won't admit you were wrong. I don't think you'll have to worry about that friend anymore. You won't have any friends left at lol if this is the way you act. You did this to yourself.

You are crazy. Who in their right mind would rape their friend's sister?!? You need to accept Jesus in your life as your savior.....NOW.

even if you are normal that OFFENSIVE comment is not acceptable in society i imagine. you should go and apologize to him.