So this happened a few winters back during the holiday season.
I was back in my home city visiting family for the holidays, along with my sister. We both have moved away to different cities, so we like to get together with old friends when we are back.
One night, I had gotten back from a late gym session when my sister had a group of her friends over for some pre drinks before they went out. I said hello to everyone, and I could tell that they were already a few drinks in and having a good time. I didn't think much of it, and went to have a shower.
I'm doing my think in the shower when I hear a knock on the bathroom door, and a voice that sounded like my sisters friend Samantha.
"Hey, can I come in? I really have to pee, and I promise I won't look."
There were other bathrooms in the house, but she said they were occupied.
I agreed to let her in so that she could do her business. However, I was feeling a little cheeky. The shower was a walk in with a glass partition, so you could see in. I was in the process of soaping up my body, so I decided to give some extra attention to my cock. With the warm water and me touching it, my cock was getting pretty chubby and it was looking nice.
When she got up to wash her hands, I caught her staring through the reflection in the mirror. She noticed that I noticed and pulled her gaze away and apologized. I told her that there was no need to apologize and that she should look if she wants to.
"I just didn't think it was that big."
I asked her what she meant, and she explained that when I walked in after my workout, all the ladies had commented on bulge in my gym shorts. I said it was good to know I was looking good.
At this point she had turned around and was looking right at me. I was still covered in soap at this point, so I told her to give me a second so I could give her a better view. I stepped under the shower head to wash off all the soap that was covering me. As I stepped out from under the water she was still there and staring. To mess with her, I shook my hips, letting my semi-hard cock swing side to side, slapping against my thighs.
Her: "Damn, that thing is impressive."
Me: "You haven't even seen it's full potential."
She paused for a second, biting her lip a little.
Her: "Can I see it?"
Me: "That's completely up to you."
I stepped to the edge of the shower and she stepped forward and slowly reached out witj both hands to grab my cock. She had this delicate touch as she started slide her hands up and down my shaft. My cock started to grow even more until it was fully hard.
Samantha is this tall blonde who I always thought was pretty and I could tell she had a nice figure. She was standing there holding my cock, wearing this tight black tube dress (no shoulder straps). I let my intrusive thoughts win, and with one finger I swiftly hooked the top of her dress and pulled it down. She gasped, and then with a smile, she playfully slapped my chest. In return, I reached out with both hands and gently pinched her nipples. She let out a soft moan.
She then hiked up her dress and pull her panties to the side. She took another half step forward, and started rubbing the tip of my rock hard cock against her clit. Fuck it was wet. We stayed like that for a minute or two, me playing with her nipples and her using my cock to play with her clit.
I was damn close to turning her around, bending her over the bathroom counter and plunging my cock balls deep inside her when we heard the rest of her friends calling for her. We snapped back to reality.
She quickly adjusted her dress and asked for my phone, which was next to the sink. I unlocked it and she put her number in it. She then left with her friends to go out and party.
Shortly after they all left, I took my phone and sent her a selfie with my still hard cock.
She responded with: "Fuck, that thing is a monster! I can't wait to see it again!"
Part 2 coming soon.