My parents have been divorced for two years. Seven months ago dad married Joan and he has full custody of me. I really like Joan and we get along great. She treats me more like a friend than a step-daughter. I guess that's because I'm eighteen and not a child.
A few days ago I was feeling rather warm and flushed as I headed home from school. I told Joan that I felt warm and she put her hand to my forehead. She said that I did feel warm and that it would be a good idea to take my temperature. She went to the bathroom to get our old bulb type thermometer. I waited for her in the kitchen. Joan came out of the bathroom and called me into the living room. I didn't know why she couldn't take my temp in the kitchen but I went into the living room. Joan was standing next to our couch and said, "come on young lady, let's get those pants off." OMG, I realized then that Joan was planning to take my temp rectally. I haven't had that done to me since I was a small child. I asked her why she couldn't take my temp under my tongue. Joan said that rectally was the most accurate way to get a temp.
Very reluctantly I removed my jeans and laid across the couch. Joan then sat next to me and pulled down my panties to my ankles. She had with her a jar of Vaseline and she put a dab on the thermometer. Then, my face really flushed as I felt her spreading my butt cheeks. Next thing I know I feel her fingertip putting some Vaseline in and around my hole. It felt like she was doing this for ever but it was probably only about twenty seconds. I barely felt the thermometer go in and Joan said she would leave it in for about five minutes. As she sat with me she rubbed my butt several times and said, "just a couple more minutes." Much to my amazement, I was starting to feel that funny feeling down in my groin area and I realized that the thought of my bare butt exposed along with an object up my rectum was causing my funny feelings.
As I laid there I very much wanted to touch myself but of course I didn't. Joan then withdrew the thermometer and gave me a light smack on the butt and told me to pull my pants up. I had a low grade tempt and I went to my room to lie down. While lying down I still felt excited and I undid my pants and the zipper. I put my hand down my panties and began touching myself. Just as I knew I was about to cum the door opened there stood Joan. I pulled out my hand but I'm sure she knew what I was doing. She also stood there a little too long. When she left I again began to play with myself and in about five minutes I came. I went down into the kitchen and Joan acted like nothing had happened. She said that that night she would take my temp again. I was totally fine with that.
I went to bed around ten and a few minutes later Joan came to my room and asked me if I still felt warm. I told her I did. She asked me if I wanted her to take my temperature again and I just nodded. This time I felt her finger enter my hole and she moved it around for quite awhile. Needless to say, My sexual arousal began almost immediately. My temperature was down by one degree and after she left I masturbated myself for a second time in one day.
I don't quite know how to interpret the tip of her finger up my hole or the rubbing of my cheeks while waiting to remove the thermometer. I do know that I really enjoyed the sensations and would love to find an excuse to have my temperature taken again.
by the way, I found this site about a year ago and I love some of the stories. Too bad writers can't include a photo if they wanted to.