How many years does it take to pass gum through the human body?

It's an urban legend, a myth, that it takes years to digest gum. It actually passes (whole) from your body in your waste just a day or two after you swallow it.
http://wiki.answers.com/Q/How_long_does_it_take_gum_to_digest
http://health.howstuffworks.com/gum-seven-years.htm