DURANT, OKDuring a routine physical Tuesday, Jason Gunder, 21, exaggerated his sexual exploits for the benefit of his physician, Dr. Stanley Pindel. 'Unprotected intercourse? Sure, I have it all the time,' Gunder said. 'Partners? Thirty or something. I've had so many, I can't even remember.' After nodding thoughtfully, Dr. Pindel told Gunder, 'If you do actually ever have sex, please make sure to use a condom and a water-based spermicidal lubricant.' 