Interesting question.
I was mostly shy, and very self conscience of my size. As a boy I had gotten teased, and felt abnormal. Being very well hung is certainly unusual, but to think of oneself as abnormal in a freaky way was harmful. I had a few good friends, but didn't mix with the popular crowd.
Once the rumors got out about my size I felt more self conscience like the other students were trying to see if they could "see" anything down there. It was probably mostly in my head, but it felt real. There were curiosity seekers, which at times made me feel more like a circus exhibit, given my state of mind then.
When I did try to be sexual with a girl it didn't go well, and girls sort of kept away from me. I had overheard my name mentioned as the pain giver. I was inexperienced, and so was the girl. I didn't mean to hurt her. Perhaps other here had similar first experience.
Ok, this isn't supposed to be a sob story, but I didn't like junior high or high school much. Everything changed when I went to college. Clean slate, more maturity, etc.
Anyway, generally quiet and reserved in high school.