I went to the university gym and decided to wear a thong underneath. I started to change into my workout clothes and noticed there were a couple of other guys I recognized from classes/my dorm building (not my floor) and was nervous but when i took off my jeans, i was standing in just a thong. Kinda nervous but no one said anything. I gotta admit that i was semi hard just feeling the rush. It would have been less nerve racking if i was surrounded by older men but i was more nervous wearing a thong by guys my own age.