GEE WHIZ! SURVIVOR HOST JEFF LEARNS A PAINFUL LESSON When you gotta go, you better go! BLADDER WOES: Jeff "went through absolute hell." Just ask "Survivor" host Jeff Probst -- he found out the hard way that putting off trips to the bathroom can lead to agonizing health problems. Although in six seasons with the CBS reality series Jeff has been zapped in the genitals by a jellyfish, stung by a scorpion, had a run-in with a king cobra snake and nearly fried himself by urinating on an electric fence, his latest and worst ordeal was surviving a badly enlarged...