I think it is unlikely that many well hung guys were teased unmercifully. It was never cruel or meant to hurt their feelings and really was just a way for young guys to show their admiration. If a guy had a very large cock especially in high school almost everyone knew. The majority of young guys always worried about their own size and when they had at least 6" they were pleased that they were at least average, but most wished they were bigger. The teasing of guys with small cocks was entirely different and the guy being teased felt humiliation even if it was light hearted and not meant to hurt their feelings.
Quite a few years John Holmes was at the place i worked and most of the workers both male and female were all worked up treated him like a big time celebrity. This was more of a show of admiration rather then jealousy and shows that a huge cock does facinate most people.