My wife is a raven-haired, tall, Spanish beauty who enjoys swimming naked. She's slim, with small, perky breasts. When she swims on her back, her breasts form two perfect globes that attract the eyes of every "swimmer".
For some time now we've gone to a late Friday night nudist swim at a local swimming pool. Being an entirely clothes optional event people seem more at ease than at the beach or even at a regular swim, conversations are jovial and it's easy to make contact and friends. One young man, a few years our junior, always greeted with a warm hello and casual conversations each time we met.
I noticed, the second time we went to the pool, that he lingered opposite my wife's shower stall and carefully dried himself. My wife said later that she thought his penis began to swell as he towelled himself and that he was "richly endowed".
Every evening we went to the pool the same procedure occurred. This man would linger in the pool until we climbed out and then stand in front of the stall when my wife showered. After each time my wife confirmed that she now knew for certain that his penis became swollen and that it was, indeed, both thick and long.
One evening while standing in the shallow end of the pool talking with some friends, our young acquaintance placed himself behind my wife. My wife was busy talking about her backache which she often gets from the lifting at her work. He began gently massaging my wife's back, something she never objects to and greatly enjoys. While he massaged her, he ever so gently moved one of her arms behind her and placed her hand on his swollen cock. She reacted with a startled splash and as I turned from my conversation I could see her cheeks flush.