Actually there are several well documented cases of someone living by drinking their own urine while others died of dehydration. How long ago was it when that man was found in (Iranian?) earthquake rubble something like 9 days later, still alive while his wife an daughters who were with him and refused to drink their urine all died of dehydration. I remeber after I first read that story is several articles from various newspapers I did a lot of reasearch (reading, not actual experimentation with my urine <img src="/images/graemlins/grin.gif" alt="" />) and found that drinking urine is a heck of a lot more common than I ever would have guessed. It's not poisonous and it's not dirty. It's actually quite sterile and in most cases it does not increase dehydration (though this depends on what is actually in your urine). That being said, I'm not testing first hand the information I gathered <img src="/images/graemlins/smile.gif" alt="" /> and I'd drink from the nastiest stream first.