I tried to think of something clever and witty to say.. but this is just too wierd..even for me. and this from the bbc..not the onion.. http://www.bbc.co.uk/news/uk-12225163
I studied this in my Psychology, In its basic form the left or right side of the brain tries to attack the opposite, however because the left or right hemisphere of the brain have no form of conflicting directly they take control of the body and use the body as a weapon. (The left and right hemisphere of the brain are actually two separate brains that work together) So congratulations, you just learned that in sense you have two brains ! I'm not going to get into this too much because I could talk forever about it.
That's freaking amazing... well not really, but still... I mean.. It goes to show that the human brain has a ton of potential if we could unlock more parts of the brain...
Read the book "The man who mistook his wife for a hat". It has a lot of interesting psychology case studies in it.