Is it normal that i sometimes feel like hitting someone?

You should headbutt them.

Yes.In my mind it is.I have a similar problem.I used to be like you but now I've just narrowed it down to men that look like deutche bags.I think we might suffer from a mild case of torett's syndrome (excuse my spelling if it's wrong).Some people have it so bad that they actually do hit people (Like the last poster)and end up being institutionalized for the rest of their lives. But as long as we only think about it, no harm can really by done

oh, yes. I got the same. I sometimes even act on it :P not with the glass though. just hitting

You have anger issues and should seek counselling before it actually turns into something worse. Also, you didn't say what sets you off is it just something random or is it, that the people or person whom you're talking about actually did something to make you that upset? If that's the case then yes, that's normal as long as you don't act upon it.