As I felt my brother's wife's hand slip inside the waistband of my swim trunks in his hot tub while he sat just feet away unaware, It never occurred to me that what was happening was wrong. All that mattered to my alcohol soaked brain was that it felt pretty dang good...
Taking a step back here, my name is Calvin and I'm a pretty average guy with a pretty average life for a 23 year old. I have a brother who is 10 years older than me named Joe. Joe married very young at 18 to his equally young bride Stephanie, and while Stephanie was a nice person who was reasonably attractive, her most defining feature to my adolescent eyes were her massive breasts. My brother and I have always been close so I had plenty of opportunities growing up to ogle those mammoth 42DD bags of fun!
Back to the night I was describing earlier, my brother and I were hanging out at his house drinking rum and playing video games while his wife drank wine on the couch watching something on Netflix. We realized that all the rum was making it really difficult to play any games so we figured we might as well finish the rum while soaking in the hot tub before calling it a night. A few minutes later we were in our trunks, pulling the cover off the tub, and sliding into the nice hot bubbly water, each of us with a bottle in our hands.
Not five minutes passed before Stephanie poked her head out the back door and asked if we minded some company, and when I saw her in a bikini I would have agreed to anything! As she drunkenly staggered towards the tub I quickly got up to help her into the tub. She stepped down into the water and almost sipped, leaning up against me to keep her balance. All I could feel was her breasts firmly pressed against my chest and shoulder, and I quickly helped her sit down next to me so I could hide my growing erection in the bubbling water.
I'm not sure how much time passed as we worked on collectively finishing our rum and wine, but every time I finally managed to get my erection to go down I would notice Stephanie still sitting almost right next to me, those fantastic tits seemingly floating on the bubbling hot tub water. I also noticed my brother's blinks seemed to last longer and longer, his eyes staying closed for minutes at a time.
I remember thinking I should help him out of the water and into the house, and as I started to stand up Stephanie pouted no, she wasn't ready for the fun to end as she pushed down on my thigh to force me back into the water. I also remember thinking it odd that her hand never left my thigh, she left it resting right above my knee. We kept talking for awhile, Joe occasionally opening his eyes to add to the conversation but mostly drifting off.
As we talked Stephanie's hand started moving, slow circles at first, then gradually moving up my thigh. She never missed a beat in the conversation, other than raising her eyebrows when her hand finally circled it's way up to what was now my throbbing erection threatening to burst the button holding the front of my trunks together.
When she reached said button she slid her hand slowly over the waistband, and like i mentioned earlier it never occurred to me that what was happening was wrong. All I could think of as that hand undid the button holding my trunks together and reached down to grip the shaft of my cock was that this felt amazing! She started stroking slowly, then whispered in my ear be right back cutie. "Come on Joe let's get you upstairs into bed."