I had an appointment with my ankle surgeon in Billings last Thursday but my wife was unable to take me as she had to take her mother to Casper. So, I asked my younger sister to take me. I am 60, she is 57 and still very beautiful. We decided to go up the day before as I also had an early morning appt for a CT scan so I booked a room for us at a hotel.

When we were younger we never had a problem being naked in front of each other or even masturbating in front of each other. Before puberty or after. I forgot to take anything to sleep in and asked her to take me to Walmart so I could buy something. She said to just sleep nude, she had seen me that way before so it shouldn't be a problem. She said she would even sleep nude to make me feel better about it.

Since we were sleeping nude, in separate beds, we also just walked around the room nude before sleeping. I've never had much trouble controlling my erections but it was pretty damn hard to that evening. In fact, I didn't for a little while but I did eventually get it reined in. She just laughed and then showed me she was wetter too, by dipping a finger in and then pulling it out. I think she was enjoying teasing me.

Well, eventually we got to sleep and I awoke in the middle of the night with two problems. I had to take a piss and I also had a major hard on that was leaking precum like crazy. I got up to go urinate and debated jerking off but just pissed instead. My sister saw me get up she said later and watched my bouncing cock as I went to the bathroom and came back.

We got up in the morning, took care of my appointments and a couple of other errands in town and started home. I like to recline the seat back and open up my jeans to the air while riding and did so that afternoon. I also usually take my cock and balls to thrill other drivers but I didn't this time. My sister did it for me, lol. She also jerked me until I was leaking precum, which didn't take long and then suggested we keep it that way all the way home, a 2 hour drive.

We almost made it. I came all over my hand, her hand and my crotch as we were passing a small town about 10 miles from the town we live in.

What a couple of days. Very unexpected fun.