Two months ago Sarah and I were invited to a party at Kim's new house. After the guests had left Sarah helped Kim clean the dishes, while Mike and I relaxed in the gameroom. When the girls had finished picking up Kim suggested that we try out their new hot tub. We made our way out on the deck where Kim slipped off her clothes and hoped into the tub completely nude. Kim taunted Sarah until she got in. Before long we were all in the hot tub without a lick of clothes. I was obvious, but later learned the girls were in a stir. Sarah had glimpsed the size of Mike's penis, evidently he is quit well endowed. Kim had taken her own glimpse of my penis and evidently she was unimpressed. I never really thought much about it, figuring I was of average size and length. It was a little chilly as I recall, perhaps I was experiencing shrinkage, but I didn't really think about it at the time.
The girls were giggling uncontrollably, until Kim asked Mike to get us another round of drinks. When Mike stood up to step out of the tub, both girls immediately got quiet. Sarah was focusing on Mike's penis as Kim asked me a question about something or other in an attempt to distract me. I was still completely clueless. Sarah was silent for the rest of the night, but I had enough to drink that I didn't think anything was out of the ordinary.
Sarah was a bit distant for the rest of the week. On Friday night we were having dinner at our favorite restaurant when Sarah told me that we needed to talk. She lowered her voice and told me how much she loved me and how she didn't want to hurt me, but she needed to talk about something with me.
Sarah began by explaining how she had seen Mike's penis. She estimated that it was at least six inches long and he wasn't even erect. She estimated that my penis was four and a half inches long when erect. Kim told her Mike was eight inches long when aroused. She admitted that she couldn't stop thinking about Mike's penis. Kim couldn't believe how small my penis was and began suggesting that Sarah might be missing out on a full sex life.