That was around two years ago, I was 19 and my Gf ( Julia) was 18 we just started to date and were spending a lot of time talking on phone. One day she told me a story of her female friend (let's call her Alice). She told that Alice started to date a guy with a really big cock around 8 inches and Alice is just so pleased with her sex life, she always cums when she has sex, and my gf added that Alice told her that anything under 6 inches is just completely useless. I was a bit shocked ( considering that I'm barely 5 inches it was humiliating for me), I said that Alice is a very lucky and I'm happy for her, then my gf started laughing at me. I asked her what happened Julia said that she knows that I should be useless in sex. I couldn't understand how did she find out it and then she said that when we were walking with her and hers other female friends they spotted me looking at Julia's ass, then they looked on my shorts and saw my little boner, it could barely be seen and was really small. Alice said that it was the smallest dick that she has ever seen others agreed with it. also they said that there is no way Julia should date me. After that words I felt so humiliated and turned on simultaneously. She said while laughing that she will try to have a sex with me, despite the opinion of her friends, since she was a virgin ( she said that it will be easier to have a sexfor the first time with small dick). She was a bit angry at me at that moment , because as she said I was an attractive, nice and caring and what is most important Tall guy, but in the ended up with useless small dick (which is the most important factor for her and her friends), she was embarrassed with it. That's turned me on so bad. I always remember that situation with pleasure.