1st and only MM experience
As a naive college freshman I had a part-time campus job that required me to work with a variety of people. One of them was an openly gay master's degree student who was extremely perceptive and manipulative. As work progressed one day he told a tale of testicular cancer and his concerns he was not normal. Not wanting to appear callous, I listened and he began to intimate that he would be reassured (at his doctor's suggestion) if he could see my package. I agreed, and off we went to the restroom.
Once there, I sidled up to the urinal and pulled out my package for him to see. He looked, studied, and said it would really help if he could see it hard. I stroked and complied while he got out the smallest cock I had ever seen and began rubbing and tugging. I started to put mine away and he played it perfectly adding that he would like to see me cum as a comparison. I used the pre-cum I had milked up to the head and nervously shot a small load into the urinal. I looked over and he was vigorously working his 2-3" as I then cleaned up and walked out.
Upon reflection, he got entirely what he wanted. The bonus for me, was that my inhibition barrier had been broken and I became very comfortable with masturbating in public. This led to a side job later my junior year putting on masturbation shows for wealthy female alums.......a story for later. I think everyone who feels shy and naive should have an experience that breaks the ice and leads to such a wonderful experience as this urinal trip did for me. BTW, we never spoke of it at all.