I was never the class clown, I was very quiet in school, I was the fat kid until college. I don't really say everything that pops into my head, I'm really the opposite. I'm very introverted, I think everything out over and over before saying it. Its probably the confidence thing, I do have a tendency to end statements, with question marks.
Oh, and yea I do workout, a lot. Before I started training, I barely talked, now I do, any no one takes me seriously.