making friends is impossible

making friends is impossible I've been trying to make friends but I'm embarrassed. Someone I've recently became friends with is a really good dude and is understanding of my issue. But he's wanting me to come hangout with him and his buddies. I want to but that's not gonna happen. What if he gets embarrassed when introducing me or his friends start laughing or giving eachother the what's wrong with him look. I'd rather not embarrass him and just forget it. I'd rather not get mad or get in a fight because they want to act like I'm stupid or make fun of me. Usually that's how I handle it, make fun of me and I'll knock you out ive been made fun of to much. That's been the only way to make someone shut up an stop making fun of me.