Frank and I used to be roommates in a first floor garden apartment near where we worked. Frank was never at a loss for bringing home women after a good night out. I was dating Mary, so I wasn't as prolific as Frank.
I knew Frank was a good lover and that he must have had a decent size cock from the very loud sounds of his sessions, that "OMGs" from the women, etc. I have to admit, I became voyeuristic and couldn't wait to listen in as Frank went at it again with someone else. One night I ran into him in the hall on the way to the john as he was leaving his room after doing some lady. Damn was he hung! He had to be about 9 inches, while somewhat flaccid. It was hanging there, swinging. You could tell that he just got done making love. Now I knew what all the OMGs were about.
Anyway, Mary moved in with us in the apartment. She and I were getting serious, close to getting engaged. Frank was always a gentleman and very nice person to her. Never came on to her, etc. It wasn't long though, before the sounds of Frank's love making and the "OMGs" came through the walls. While our sex was decent, I didn't have Mary screaming "OMG", "oh Baby" and slamming the bed into the wall. I'm about 6 inches fully hard.