So my buddies have been making a joke recently that have Asperbergers and it's really bothering me. They think autism and things of that nature are funny and they always explain "weird" people as "they have autism". Anyway I made a comment about something when I shouldn't have and my buddy in a jokingly way was like "aspbergers confirmed" talking about me. This isn't the first time he has done it and he isn't the first person to tell me I have it. I looked up the symptoms and I noticed I have a lot of them but I'm also an only child, and I saw that it most of those symptoms can be because I'm an only child. I would say I'm good socially for the most part. I do feel uncomfortable from time to time in big groups with people I don't know or older people in public trying to get to know me, but that's about it. Most people I've met/dated said they love to talk to me, but I have treated people like complete shit to the point where they ask "what's wrong with you?" 
I also like to collect stuff like movies, games, and those new Pop Vinyl things and my buddy says "that's something an autistic person would do" which just gets me thinking. Anyways I've thought about it and it's driving me nuts. My girlfriend's family is around autistic spectrum people all the time for their jobs and my gf thinks I don't have it. 

So what has been your experience with people with aspbergers and what signs did the person throw at you that let you knew they had it.