This was SO cool!
My buddies and I had no place to go over spring break of our senior year in high school. However, one of our friends had the summer house to himself. We ended up there on weekends a lot anyway.
We decided to play strip poker. Even though it was just the five of us guys...it was at least something to do. We had all seen each other naked all the time between PE showers, sports, and skinny dipping ... so there wasn't much to anticipate-just the thrill of being naked in a place that you aren't normally in, like your friend's living room.
The game went on and about half of us, myself included, ended up nude. The others were at least half naked at that point. The surprise of our life was when our friend's older sister showed up totally unexpectedly from college. Of course she had a key to the summer house and just walked right in the front door on us.
We froze, not too sure what to do. She came in and was pretty cool about it. She said 'no worries' I've seen my brother naked since he was born, so no problem. It was obvious that she was checking us all out. She even went in to the kitchen to get drinks for us and brought them to us. She was only too happy to look at each one of us as she handed them out. Being naked in front of this cute girl I immediately popped a boner which was impossible to hide. When she brought me my drink she looked and smiled and sort of brushed my leg with her hand.
The other guys kept playing and had to strip in front of her as she sat to our sides and watched the game progress. She was wearing a tight tank top, and it seemed the more she watched, the harder her nipples got.
When I got up to go to the bathroom, she followed me in and closed the door behind her. She said that I had been totally hard since she arrived and she wanted to help me out. She grabbed my cock and asked how I could be so hard-for so long! She went behind me and started stroking me with one hand and shot my load into the other. That was SO hot.
I returned to the game, now only about half hard ... when the game was over and all of us were naked, she just teased us about five guys playing strip poker by ourselves. She said, I've got friends, you know!