Tanya then skipped off to the diving area and began to show off her form on the medium board, doing double somersaults and entering with hardly a splash. Jimmy leaned back, waved for a drink from the bar, and wondered how he had ever gotten so lucky. Dana's eyes were glued to the nubile girl's acrobatics, and she caught herself licking her lips.

An hour later they decided to go in from the sun, and all 5 hurried to Mike and Barbara's apartment. The airconditioning felt great after the heat of the day, and no one dressed any more modestly than they were while Barb went into the kitchen to fix a pitcher of cool drinks. Tanya told Jimmy and Dana that she was in town to see a hard rock band the next night. Mike then explained how Tanya had walked in on he and Barb making love accidentally nearly 6 years ago, and they had spent time with her explaining the mechanics and the emotions, but had not done more with her until her 18th birthday. That was when the monthly visits had begun, and had continued for nearly a year. Barb returned with the drinks, and as everyone sipped Mike asked Tanya if she would like to expand her horizons. The mischievous smile reappeared on her face, and she reached out both hands to Jimmy and Dana, and led them back to the bedroom with Mike and Barbara following close behind. She motioned for the 2 couples to sit on the bed, and then she began a slow striptease that sent shivers down their spine. When her suit was off she turned her back to them, but they could see her fingers moving back and forth between her legs as she swayed her hips. Her motions picked up tempo and she turned and faced them, her eyes closed, but her fingers massaged her slit, and now and then dipped inside for lubricate herself.