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."