I'm obviously not implying anything by this but trying to pinpoint particular traits in Autism/Aspergers syndrome is a minefield.
Look at the "triad of impairments" closely,this is often used as a gauge to weather someone could fall within the Autistic spectrum,but it is not foolproof.
Social interaction and the use of imagination are the key elements,language is more difficult to pigeonhole as a trait of someone within the spectrum,alot of things that people do or say are are often just from rote memory.
i used to get so worried seeing my 3 yr old do something similar to what an Autistic child/adult would do,perhaps if i didnt work with youngters within the spectrum it wouldnt even cross my mind.
Check out this site if you are in anyway concerned....
http://www.has.org.uk/