Naked, when and where?

HI- I am 13 and I was 9

When I was part of a new swim team, I realized had to shower after practice. The room had 30 showerheads and a seperate changing area. On the first day after practice, my friend Justin and I showered together. I wore a wetsuit over my jammers. Meanwhile, Justin wore a legskin. When I entered the changing area, others were stripping nude. We didn't know how to react. Therefore, I only stripped to my jammer and Justin wore his legskin. We showered and wondered why others stripped nude when the coach told us to remove everything. We did and walked back to shower embarassed. Midway through the shower, Justin got an erection. I touched it and I did too. Everybody pointed at us.

Currently, Justin and I still shower together. We like to wait until everybody is gone so we can matrubate in our swimsuits. Also, we can touch each other to get erection.