What they started out as:
Indecent exposure incident at YMCA
https://www.ymca.org/who-we-are/our-historyWhen George Williams founded the first YMCA in Industrial Revolution-era London, he sought to create a supportive community to help young men like himself address pressing social challenges. The idea found a home in the U.S. seven years later at the Old South Church in Boston. The last 170+ years have seen the Y's mission grow exponentially, and today the Y engages more than 10,000 communities across the U.S. As the nation’s leading nonprofit, the Y is committed to empowering people to reach their full potential, to improving well-being, inspiring action, strengthening communities and ensuring that everyone has the opportunity to become healthier, more confident, connected and secure.
Indecent exposure incident at YMCA