I've been wanting to continue this idea. I myself can make up words instantly and make phrases that I do not know the meanings of, yet, being random, words repeat sometimes with different endings and sounds. To help me understand this, it would be nice if you would tell me if you can do this as well, and post an example even if you can't. Just make up some random jibberish and post it, It will REALLY help. I've also heard of dreams being tied in with this, and strange Anglo-Saxon rune resembling symbols being flashed. This may sound silly, but any words you post will help.
When I've done this with friends, I've seen striking similarities, as if we were talking, yet we can't really understand, yet at the same time we do. Maybe something subconcious?