I am a 34 year old technician working in a hospital. Once a year we have to undergo a medical examination to determine the effects of radiation-exposure. Last year I ended up with sister Morris where I had to strip down to my boxers in order for her to do a head-to-toe examination of my skin. Sister Morris is in her early 50's, but still shaped like an 18-year old.
At the stage where she was examining my stomach I suddenly felt myself getting a hard-on from her soft hands probing my skin and her fore-arm rubbing over my crotch. We both tried to hide our embarrassment at first, but my hard-on wouldn't subside when she moved her hands down to my legs. In fact, it sood straight up and prominent like a tent-pole. I put my hands over it to try and cover up, but that only worsened the situation as it seemed to focus her attention there. Then she told me that I should rather go stand behind the screen and w*** off quickly before anybody else came in so that we could finish the examination. I was engaging in the act for about 2 minutes when she peeped around the screen and asked if I needed assistance. She was still on the other side of the screen but held out her hand and beconned me to come closer. I put my d*** in her hand and within seconds she had me shooting my load all over her arm and onto the floor.
After cleaning up we could finish the examination in more normal condidtions and I left aa a very satisfied and happy man.