In addition to being able to drink fresh urine, it is also excellent for cleaning wounds on the battlefield or in the wild, or wherever you may be when your usual wound-cleaners of choice are far away. Urine is also an excellent salve for jellyfish stings. It contains enzymes that help break up the natural chemicals causing the sting. A use for that full bladder on the beach at last.
Thanks, Stu, for jogging these tidbits out of my brain.