If a second conscious head grew out of your shoulders, should you have the right to chop it off?

[KHlover]

Fun fact: This (kinda) has already happened:

There have only been ten documented cases of craniopagus parasiticus (though to-date at least eighty cases of craniopagus have been written about in various records.)[3] Only three have been documented by modern medicine to have survived birth.

On December 10, 2003, Rebeca Martínez was born in the Dominican Republic with this rare condition. She was the first baby born with the condition to undergo an operation to remove the second head. She died on February 7, 2004, after an 11-hour operation.[7]
On February 19, 2005, 10-month-old Manar Maged underwent a successful 13-hour surgery in Egypt. The under developed conjoined twin, Islaam, was attached to Manar's head and was facing upward. Islaam could smile and even blink, but doctors determined she had to be removed, and that she couldn't survive on her own.[8] Manar was featured on an episode of The Oprah Winfrey Show and in the British documentary series Body Shock. Manar died fourteen months after the surgery, just days before her second birthday, due to a severe infection in her brain.[9]
An earlier case was the so-called "Two-Headed Boy of Bengal," who was born in 1783 and died of a cobra bite in 1787. His skull remains in the collection of the Hunterian Museum of the Royal College of Surgeons of London.[3]

http://en.wikipedia.org/wiki/Craniopagus_parasiticus
http://en.wikipedia.org/wiki/Edward_Mordake