Wow, what a coincidence! Just yesterday I was talking to another member of TCoD who also had Asperger's.
Well, the most obvious thing when you first see him is his inability to make eye contact. When he talks to me, he doesn't look at me; he sort of looks at the floor, or the table, or at the cieling, or anywhere else. He might look at me while I'm talking, but he can't sustain eye contact. When he does, he tends to hold it for too long.
He's got these hand movements which are very peculiar and sort of... I think the word used was "stereotypied." Like, he just sort of moves his hands in the same way every time, but it's not in a way I've ever seen any one else move. A few days ago, I saw this boy with autism in a class of mine and he moved his hands in a way that reminded me of my boyfriend a lot.
He has a tendency to monopolize conversation, which I've read is pretty common among people with Asperger's. He'll just start talking and talking and not realize that he's not letting the other person talk until he reaches the end of speech and he's like "...say something" or "...but enough about me, what about you?"
He's not co-ordinated at all. I've read that this is a common symptom, though obviously on its own it doesn't mean anything. Once I took him ice-skating and I had to hold his hand the hold time to prevent him from falling. It was cute <3 but I noticed that he said that the blades were paper-thin when in reality they were... the normal size of skates, like half a centimeter. He's pretty clumsy as well.
He has this interest in patterns, especially textures. At my birthday party, I gave him a cup with some plastic ridges down the side and he just ran his fingers up and down the sides and looked like he was in heaven. He's done the same thing with corrugated cardboard and my couch cushions.
There's a lot of small things which don't mean anything on their own but make sense in the larger picture. For example, he has the habit of repeating things immediately after someone says them - echolalia. I ask him "did you parents like me?" and he'll be like "did my parents like you? ...yes." I didn't notice this trait until, in my research, I read that echolalia was common among people with Asperger's. He doesn't make small talk and he's kind of socially awkward. Sometimes I feel like he might interpret things I say too literally, or too much at face value, but he has a perfectly good grasp on colloquial English and just from hearing him speak, you wouldn't think he's anywhere on the spectrum.
Then there's the more solid evidence, which is that I know he was diagnosed with something. He once mentioned to me that he was diagnosed as a _____, among other things (I say _____ because I'd rather not reveal it; it's his secret, not mine). His parents thought he might have been retarded as a child. I'm imagining it might have been due to a language delay, although Asperger's doesn't usually have a language delay, from what I know. He's also said that for our standardized state test, he has to test in a separate room for kids with disabilities, and that he has the option of using extra time on the SAT. He has never, however, stated what this disability is (it's most certainly not the ____ I mentioned above) and he seemed reluctant to talk about it. Perhaps even embarrassed that he had extra time he felt he didn't need. I tried asking him about his extra time again a few weeks ago, but he didn't want to talk about it (though he said he wouldn't keep it from me forever).
He also definitely knows what Asperger's is. At my birthday party, the subject somehow turned to autism and Asperger's. A friend of mine asked what Asperger's was and he said it was "high-functioning autism." Another friend then explain some very broad characteristics of Asperger's and the first friend was like "oh, I think Jane at school might have Asperger's!" At this point, my boyfriend said "no, trust me, she does not have Asperger's." The "trust me" seemed to imply that he had personal experience with Asperger's. He didn't participate much in that conversation and it soon turned to something else.
Ever since I first read about the symptoms of Asperger's, I was like "hey... this sounds really familiar." I've been researching it like mad since, and I've asked some people who have it (over the internet; I don't know any people with Asperger's in real life) who think it might be possible, though obviously a diagnosis can't be made over the internet. Some of my friends like to joke that he has autism or AS because of his inability to make eye contact, but they all tell me "no, he doesn't actually have AS, he's just weird." I'd be inclined to believe them were it not for the fact that he's told me he's been diagnosed with something, and Asperger's just fits it so much better than any of the other possibilities I researched (dyslexia, ADHD).