Will Ferrell -- Piss Drunk

Me Will Ferrell. Me no joke. Me drink pee pee instead of coke.

Yes, Will Ferrell chugged a frothy glass of his own urine recently -- but don't worry, there's a good reason ... kinda.

Dude took a shot of the yellow stuff during a guest appearance of the survival show "Man Vs. Wild."

Ferrell told USmagazine.com, "To be able to participate in an episode of 'Man vs. Wild' was a thrill of a lifetime, even though I did get urine-drunk which is sad."