Easiest Way To Describe

Around 2:00 this afternoon I was sitting on the love seat in the living room playing on the computer and I looked up and out towards the play room. When I did this, I can only compare this to a character in a movie. This may sound out there, but here goes. The thing I seen when I looked up was like the Predator(invisible mode). Now when I say Predator, I don't mean it looked like it, just looked like its invisibleness, if that makes sense? Whatever it was , it was moving and it was only there for a few seconds and then it was gone. That is why it took me so long to post this to the blog because I was trying to figure a way to put it, but couldn't get around the way I just described it.