Wacky Will Ferrell: Guy Gone 'Wild'

Will Ferrel will risk humiliation for the sake of a joke faster than you can say ''tightie-whities.'' But he's never risked his life...until now. In an inspired stroke of pre-movie promotion, Ferrell — who battles dinosaurs and Sleestaks in the June 5 comedy Land of the Lost — agreed to test his mettle on the Discovery Channel hit Man vs. Wild. And so, in the June 2 episode, he'll gamely venture into the frozen wilderness of northern Sweden with adventurer Bear Grylls. What made the former Saturday Night Live star sign on? The idea of going native with a guy who has crawled inside a camel carcass was just too tempting to resist. ''When it was pitched to me, I couldn't stop laughing,'' says Ferrell (who will next film The B Team with Mark Wahlberg). ''I was like, 'Oh, that might be awful, but I have to do it.'''

Spending 48 hours in frigid temperatures, Ferrell learned how to make snowshoes from birch branches, rappel from a helicopter, and light a signal fire. For the record, however, he did not drink his own urine. ''I did eat the cornea of a reindeer, though,'' he says, debunking previous peecentric press reports. ''Bear cut out this little gelatinous disc from the eyeball and was like, 'Here, try this.''' The verdict: ''It was like a Certs breath mint, without any of the delicious properties.''