Every person I meet says I'm really ramdom and it's true. One second I'll be talking about trees and the planet and the next sentence will be something totally bizarre like the textures of cat fur or something. Is this an aspie thing? Are you naturally spontaneous and random? And what is the most random thing you've ever said?
I would say that in this specific instance, it's less a thing to do with Asperger's and more to do with someone's personality. If you are at all familiar with Myer's Briggs personality typology (
The Myers & Briggs Foundation - MBTI® Basics then the concept of spontaneity would be more closely associated with "P" types as opposed to "J" types.
That said, my hypothesis is that Asperger's develops differently - certain traits or dispositions more often manifesting - according to the person's personality. This may be why all Aspies are affected in unique ways, and why some are more similar to others (because they have either the same or close personality types). By the bye, it appears that a vast majority of people with Asperger's fall into the INTP or INTJ personality types.
A good example of how this might play a role would be the following:
An INTP Aspie would probably have a more philosophical, theoretical thinking process - thus being drawn to more abstract studies, psychology, fiction, puzzles, and art. Also, they would be the type (and ENTP) most likely to be "all over the place" when they talk to people about their ideas. A typical comorbid disorder could be ADHD/ADD.
An INTJ Aspie would probably be more grounded in practical applications such as mechanical sciences, mathematics, general problem solving, or cerebral studies. They would be most likely the ones who are very rigid with schedules/routines. A typical comorbid disorder could be OCD.
There is, of course, an interesting line drawn here. Often people want to find what
exactly is caused by Asperger's and what
exactly is caused by your personality, and so on. I don't think that's the right way to look at it. In the brain/mind, everything is interconnected so everything works together and bounces off and complements and detracts from something else. Ergo, Asperger's would be interlocked with personality and vice versa.
I'll have to cut myself short with explanations, as I could easily write a book on this topic.
However, I hope this gives you some "fuel for the fire" so you could think about it if you wanted.
Here's an interesting article on the relationship between INTP and ASD:
INTPs and Asperger's Syndrome | Oddly Developed Types