School swimwear

When I was at secondary school in the 80s a few of us guys did the swim class naked, one by one the other guys swam naked.Our male PE teacher didnt mind us swimming naked.One day unannonced when we came out of the changing room we discovered we had a female teacher who was suprised to find us naked.The next time we went to the pool we decided we would continue swimming naked.This woman came into the pool with us wearing a one piece swimsuit,after io minutes she said what the hell and took of her swimsuit and swam naked with us