Ape drinks his own pee, guy! http://www.madboy.tv/media/2954/ape_drinks_his_own_pee/ have you ever tried?
I just remembered one of the host that i saw in discovery channel a guy who educates people on how to survive in the dessert there's this one episode where in he needs to squeeze elephant poop just to get water and drink it eeeeeew! sooooo gross! yuck!
Drinking your own pee would be weird. I would do it if I had to, but I don't think that monkey had to.
Some people actually drink their own pee on purpose and claim it has beneficial qualities. Also, some doctors claim it has healing properties when applied to wounds. Sounds like someone is taking the piss to me