Situs Inversus or The Man with the Left Handed Heart.
I live in New York, on a busy day going through Chinatown, Union Square, or any other series of busy places, I no doubt set eyes upon 10,000 individuals. Well, one of these 10,000 is not like the others. One of them is a mirror copy. 1 in 10,000 people have what is know as Situs Inversus, a condition in which your entire internal system is reversed. All of your internal organs, your blood vessels, nerves, lymphatics and the intestines are all reversed. Most people with this do not even realize they have a problem until the doctor realizes it's not a mislabeled x-ray (If this isn't a House medical mystery in the making I don't know what is).
A more unfortunate situation is one of Situs Ambiguus, where the organs are scattered willy nilly about the thorax and abdomen, and it does not bode well for the sufferers. It is linked to a numer of factors, one being the use of cocaine during pregnancy. So you know... don't do that. I urge you, the next time you walk around in a large crowd, look around, for there is a chance you may be starring into a mirror image of your own organs.
Oddly enough, there is a way to tell if this is going on without getting x-rayed. I'm not kidding, I read it somewhere legitimate, I promise.
Every male has one testicle that hangs lower than the other. It is the same for every boy everywhere. I'm not a boy,and my memory seems to be failing me as to which testicle it is, but anyway... if you are one of the very few who goes against convention and lets the other one sag... well, good chance you have backwards organs.
Really. I'm not strange/bored enough to make that up.
Does anyone know which one it is though?