Don’t you just like it when you can take something so simple and make it into something interesting when you are bored or high?  No way someone is sitting at home stone sober and thinking they need to create some sort of finger art.  I believe these pictures are the result of some form of stress induced hysteria.  I was going to throw up a link to the source, but it cam up as malicious so I have decided against it.  If you must know and want to risk a trip just let me know.