[quote="Fangtuft"]i dont know anyone who has it, but i dont know what on the spectrum means either[/quote]
Basically, it means this:
Think of a light switch. It's either on, or off. Suppose being autistic is like having the light off, and being a 'normal' person is like having the light on.
That is a very oversimplified way of thinking about it. Instead, the autism spectrum identifies the brightness of the light. It means that someone can be partially autistic, or partially normal.
At one end of the spectrum, there are people who are so severely autistic that they cannot speak. Those are the people who usually come to mind when the subject is brought up.
But it's not always like that. For all the severe cases, many more people are autistic, but to a far lesser degree. That's what you'd call Asperger syndrome. Many people who have Asperger syndrome are capable of living healthy, normal lives (it's just not easy). Some of them don't even know that they have it.
In fact, even most 'normal' people have at least one or two autistic tendencies. Introversion, in itself, is an autistic trait. So is being socially awkward, having intense obsessions, having difficulty controlling emotions, not wanting to hear loud noises, and so on. Autistic traits, with less severity, are totally normal.
One of the few guys that I got to know in high school had Asperger syndrome. It was very difficult to talk to him, but at the same time, he was the most brilliant person I've ever met. He was a walking, talking encyclopedia of knowledge, kinda like Wikipedia in human form. Ask him a question about something science-y, and you'd get a 30 minute lecture.
As for myself, I have quite a few autistic tendencies. If it comes down to it, I'm probably not autistic enough to warrant a diagnosis. But, that being said, after being a social outcast in secondary school and doing weird things as a kid, I can relate.
Heck, I'm an introverted, socially awkward engineering student with more than 7000 posts on a Lion King forum. I'm also a guy who is a fan of My Little Pony. At the very least, I'm probably a
little bit autistic.
But maybe I'm not. Who knows? Psychology is complicated stuff.

It's nearly impossible to categorize and classify things like that, in their more subtle form. In the end, I'm Regulus and that's all there is to it. I can be weird at times, and sometimes the way I think can be a little sideways—I know it, and I don't really care. I am who I am, and regardless, I wouldn't want to be anyone else.