Is it normal that i get angry this way?

This dude said it ^

Hi there, there's a well documented psych concept that describes how people who might be generally shy will spend a shit load of time online gaming etc because the "relationship" with the xbox or the people you game online with is non judgemental. think about it, it's pretty logical. You feel in control and like you are somebody. You don't have to apologise for rudeness or mistakes, you just say "suck it up dickhead" or something similar. Weaning off online gaming and cyber life back into the real world is like getting off heroin, only harder. See a pshychologist and they will help you get all over it like a fat kit on an x box. ooops.

It's annoying because you know that you can do other things when you feel like it.

That's basically what I do. I wouldn't like ppl to tease me about anything.

I think you're getting angry precisely because you think what they're saying is true. It's perfectly normal and you obviously have enough self-awareness to have realised this. That, at least, is a good sign.