There is an Indian man (a 'yogi') who claims to have not eaten or drank in over 70 years. This could seem like a bit of BS to everybody, but in 2003 a hospital convinced him to go in for 10 days to be monitored. Apparently in this time he didn't eat or drink anything. 10 days without drinking will kill anyone, yet he didn't have the slightest health problem.
A few years later he was monitored again, this time for 2 weeks. In this time it was found, again, that he didn't once eat or drink, and was baffling all the doctors. Thankfully, he offered up his own explanation, "I get the elixir of life from the hole in my palate, which enables me to go without food and water". Cheers for that, now be quiet and let the big grown up doctors carry on with their research.
Anyway, one of the researchers, a Dr. Michael Van Rooyen, who's an emergency physician at Harvard's Brigham and Women's Hospital, an associate professor at the medical school, and the director of the Harvard Humanitarian Initiative, struggled to believe it. This professional, educated, white-coat-wearing doctor said:
"You can hold a lot of water in those yogi beards. A sneaky yogi for certain,"
What a legend. 'A sneaky yogi'. Just goes to show... you can lead a Yogi to water, but you can't make him drink.